1. If the watch is connected to another mobile phone:
Swipe up on the main page of the watch to check the connection status of Bluetooth, a white connection icon is displayed above the Bluetooth-connected watch; non-connected broadcast icons are displayed above the watch that is not connected to Bluetooth.
2. If the Veryfit you used is not the latest version:
Android users can download and install through Google Play, and IOS users can download and install through the App store. Or scan the App QR code on the watch to download and install.
3. If the model of the mobile phone does not support:
Android system requires 6.0 or higher, and the IOS system requires 9.0 or higher.
4. If the Bluetooth of the mobile phone is not turned on, please turn on the Bluetooth of the watch.
5. If the watch is not nearby, the screen of the watch should be lit when connected.
6. If the Bluetooth function of the mobile phone fails, the Bluetooth function needs to be restarted.
7. If you have connected the watch with other IOS mobile phones before and performed Bluetooth pairing. When connecting again, the device needs to be ignored in the Bluetooth device of the mobile phone.

1. The Bluetooth connection distance of the product is about 17 meters. If it exceeds this range or there are obstacles, the connection may be disconnected.
2. If the Veryfit cannot run in the background, causing the Bluetooth reconnection to fail:
You need to set the background permission of the Veryfit.
3. For mobile phones with the IOS system, please check whether your watch is bound to the BT Bluetooth of the mobile phone. After pairing it with the mobile phone, you can answer and make calls on the watch. The Bluetooth function of the mobile phone is turned off.
4. If the Veryfit you used is not the latest version:
Android users can download and install through Google Play, and iOS users can download and install through the App store. Or scan the App QR code on the watch to download and install.
5. If the Bluetooth function of the mobile phone is abnormal, the Bluetooth function needs to be restarted.

If the mobile phone cannot search the Bluetooth of the watch, you need to restart the Bluetooth of the mobile phone or restart the mobile phone to try.

1. Try to turn off the Bluetooth and restart the phone, and then turn on the Bluetooth to bind the BT to try.
2. If it can't be solved, it is recommended to reset the bracelet and try.

1. Amplify the voltage power button (upper key), after the flashing screen, 2 minutes after the automatic connection BT, after 2 minutes, there is no connection, manual connection BT.
2. Please check if you have any mobile phone's BT Bluetooth to bind. After pair with phone, you can answer and make calls on the watch.
3. The App may be killed in the background, causing the Bluetooth connection to be disconnected. Please re-open the App and reconnect and try again.

1. Please check whether the volume of the watch is turned down to the lowest level. You can try to adjust the volume of the watch and turn up the volume (Watch--Settings--Ringtone Size).
2. If the volume is adjusted to the maximum, but the sound is still very low, please check whether to update the watch to the latest firmware, or upgrade the App to the latest version, please try to upgrade to the latest version and then try again.

1. If the sound quality of the watch is confirmed, check whether there is the latest firmware upgrade or App upgrade, and try to upgrade to the latest App or firmware to try to confirm the sound quality again.
2. The Bluetooth connection is unstable or the signal problem will affect the communication between the App and the watch or there are obstacles in the middle, which may cause sound quality related problems. The maximum range, beyond this range, the connection will be interrupted, resulting in silent or intermittent dialing.
3. If the above steps still cannot solve your problem, please bring your purchase certificate and go to the nearest ID208BT customer service center, and the outlet engineer will provide you with professional after-sales service.

1. Hang up and try again to see if it can return to normal.
2. The direct distance between the watch and the mobile phone should not exceed 17 meters. 17 meters is the maximum range of the Bluetooth connection. Beyond this range, the connection will be interrupted, resulting in silence during the dialing process.
3. If the short-distance call between the watch and the mobile phone is still interrupted frequently, it is recommended to check whether there is the latest firmware or the App has been upgraded to the latest version and try it.

1. The bluetooth connection is unstable. If the bluetooth of the mobile phone is turned on for a long time, the bluetooth signal will be unstable. It is recommended that the user turn off the bluetooth of the mobile phone for a period of time and then turn it on again to try.
2. If it still cannot be solved, it is recommended to check whether there is the latest firmware or software upgrade to the latest version, and then try again.
3. The direct distance between the watch and the mobile phone should not exceed 17 meters. 17 meters is the maximum range of the Bluetooth connection. Beyond this range, the connection will be interrupted, resulting in silent or intermittent dialing.

1. Follow the APP's operating instructions to log in ( ID208BT were --device---how to use---Amazon Alexa).
2. Ensure that the mobile phone network environment is good.
3. Ensure the various permissions required to open the App.
4. Keep the watch Bluetooth connected to the App.

1. Ensure that the mobile phone network environment is good.
2. Ensure the various permissions required to open the App.
3. Keep the watch Bluetooth connected to the App.

1. Ensure that the mobile phone network environment is good.
2. Ensure the various permissions required to open the App.
3. Keep the watch Bluetooth connected to the App.
4. Make sure that the surrounding environment is noisy, causing Alexa to fail to recognize.
5. Pronunciation needs to be as standard as possible in order to be recognized.ALexa voice does not support Hindi.
6. Open the Amazon Alexa APP and check whether the customer has turned on the multi-turn statement of the Amazon Alexa APP. If the multi-turn statement is turned on, the voice will not be recognized. It is recommended that the customer turn off the multi-turn prediction. The viewing and closing paths are as follows: "Amazon Alexa APP--->devices --->ALl Devices-->techlife Watch R100-->Follow-up Mode ---on/off" , select OFF, refresh the Amazon Alexa APP to sync.

1. The app drinking water reminder function is not turned on or the current time is not within the set time period-->App--Device--Health Tracking--Drinking water (select the opening time period and set the interval time for drinking water reminder).
2. The watch and the phone are not properly connected.

1. The message reminder notification function in the Veryfit is turned off-->Open the path: App--Device--Notifications and reminders--turn ON--Sync mobile phone notifications.
2. The Veryfit does not have permission to obtain notification permission-->Get permission path permission: Phone Settings--Find Veryfit--Notifications--Allow Notifications, turn on notification access.
3. There is no connection between the watch and the mobile phone Bluetooth.
4. Turn on the Do Not Disturb mode, turn on the Do Not Disturb mode, the message does not remind and does not vibrate.
5. Call reminder delay --> Turn on the call reminder delay on the App side for three seconds.

1. The Veryfit does not have access to the address book permission --> (App Information --> Permissions --> Address Book Permission --> Allow).
2. The font version of the watch does not support the contact name.
3. The watch does not support displaying special symbols. Such as emoticons, network special symbols (♞, ✔), etc.
4. There is no connection between the watch and the mobile phone Bluetooth.

The watch uses the photoelectric transmission measurement method to test the heart rate. In principle, the sensor in contact with the skin of the watch will emit a beam of light on the skin to measure the reflected/transmitted light. Because blood absorbs light of a specific wavelength, every time the heart pumps blood, that wavelength is absorbed in large quantities, and the heartbeat is determined. Because heart rate detection uses photoplethysmography (PPG), the accuracy and consistency of the test needs to take into account "gender, age, height-to-weight ratio, weather, race/color and health/VO2 max", so wrist sweat Other impurities, dark skin (can't absorb light well), weather, humidity, may affect the test results.

1. Non-standard wearing method will affect the measurement of heart rate signal. Wearing too loosely or wearing too close to the wrist will result in inaccurate heart rate measurement. If you can see the green light of the heart rate light leaking out, it means that the watch is not very good. It fits the skin perfectly. It is recommended to wear it at a position two finger widths away from the wrist.
2. The swing of the arm and the slight movement of the watch on the skin, etc., wearing the bracelet too tightly, raising the arm and making a fist, etc. will affect the blood circulation, and may also affect the heart rate signal.
3. The correct measurement method is to lay the arm flat, relax and keep it still, while ensuring that the bracelet is close to the arm. Note: Individual differences such as skin color, hair, tattoos, and scars may also affect the heart rate signal when worn correctly.

1. The light-emitting position of the bracelet should be close to the skin (muscle) to ensure that there will not be a large position deviation during the exercise (slightly tighten the strap to achieve a comfortable tightness). Too much looseness will affect the test results (to avoid light leakage, the position of the skin epidermis moves when the light is reflected, etc.)
2. The light-emitting position of the bracelet should not be close to the protruding bones (radius and ulna) on the wrist side, otherwise the bracelet cannot correctly receive the red light reflected by blood vessels, which will affect the test results.
3. In order to pursue a more accurate heart rate value, you can wear the bracelet to the arm position on the wrist. 

1. Due to the design: heart rate detection, the light transmittance of the blood changes due to the pulse beat, and then converted into an electrical signal by simple light reflection for recording. Our blood is red, and the absorption rate of green light is The largest, the final data after reflection is the most accurate, so the LED light chooses green as the heart rate detection tool.
2. Automatic heart rate detection The heart rate is detected every 5 minutes. Users can also enable manual heart rate detection. During detection, the heart rate light will automatically flash and emit green light. .

1. The heart rate algorithm needs a certain amount of data to accurately identify the heart rate, and display the heart rate data when the signal quality meets the requirements.
2. The wearing posture is incorrect --> Please wear the wearable device correctly, with the arm flat, keep the wearable device screen up, the wearable device and the wrist skin comfortably fit (slightly tighter), do not wear it on the wrist joints, during the measurement process, keep your arm still during the measurement.

1. The heart rate of the watch is obtained from the data of the PPG optical sensor and processed by a certain algorithm to obtain the user's heart rate value.
2. When the PPG sensor of the watch is facing a foreign object, most scenes can recognize that it is not worn, but some scenes (light interference, motion interference) will cause recognition errors and the heart rate value will appear.
3. The watch has just been taken off from the hand, and the watch wearing recognition algorithm has not yet detected that it is not worn, which may incorrectly test the heart rate value.

1. Please make sure watch is connected --> Reconnect on App
2. Refresh device page on App to get heart rate data updated.

Sleep monitoring works through sensors built into the watch. The sensor can detect the subtle movements of the human hand to determine whether the human body is in an active state or a quiet sleep state. During the sleep process, the frequency of hand movements of the user is recorded to analyze whether the user is in a deep sleep or a light sleep state, so as to analyze and suggest the user's sleep quality.

The sleep algorithm is based on the data detected by wearing, and through a certain algorithm to estimate the user's time to get up or fall asleep, there is a certain error, in order to ensure the accuracy of getting up and falling asleep, it is recommended to insist on wearing it continuously.

1. The watch is not connected to the phone --> Follow the connection steps to reconnect.
2. App synchronization data is slow --> pull down the sleep details home page, refresh the data.

1. The sleep duration must be over 1 hour.
2. Power is too low and the watch is shut down.
3. Restart App and try again to get sleep report updated.

1. Outdoor running, outdoor walking, outdoor cycling, hiking:
The App side initiates the movement --> the movement distance is calculated according to the GPS of the mobile phone. The GPS signal is weak or there is no signal, which will lead to errors in the movement distance.
The watch side initiates exercise --> when the GPS is not turned on to exercise, the distance is estimated by the number of steps the user moves, and is estimated by a certain algorithm (number of steps * stride), and the stride is related to height, weight, gender, and gender. Wait, there will be some errors.
2. Indoor running, indoor walking:
Distance is calculated according to the algorithm (number of steps * stride), the stride is related to height, weight, gender, etc., there will be certain errors.
3. Outdoor riding:
Only when it is initiated on the mobile phone can the movement distance be displayed. Initiated by the watch side, the movement distance cannot be displayed

The calorie data of the watch is related to the user's exercise volume, exercise duration, personal information, etc., and is calculated based on certain algorithm rules, and there will be certain errors.

The pedometer algorithm uses the data of the acceleration sensor to calculate the number of steps of the user through a certain algorithm. Some regular movements will be miscounted as step count data (persistent wrist movement/vibration, etc.), and an anti-false step algorithm has been added to minimize step counting errors.

1. The duration of exercise does not exceed 2 minutes, and there is no exercise record.
2. The watch is not connected to the phone --> Follow the connection steps to reconnect.
3. App synchronization data is slow --> pull down the sports details home page, refresh the data.

1. The watch has no GPS chip and does not have GPS track tracking function.
2. If you want to get the track tracking function, you must open the exercise on the APP side. Because the GPS of the mobile phone is called at this time, you must also bring the mobile phone with you when exercising.
3. Through the sporgts by the watch, even if you take the mobile phone with you to exercise, there will be no movement trajectory for you.

Pedometer detection uses a three-axis acceleration sensor to track the number of steps. The three-axis acceleration in the smart bracelet is based on the real-time captured data in three dimensions, through filtering, peak and valley detection and other processes, using various algorithms and scientific Sophisticated logical operations finally convert these data into readable numbers on the wristband App, and the number of steps, distance, and calories consumed are presented to the end user. The shaking of the hand plus the displacement can be used to detect the displacement of the bracelet in space by integrating the acceleration through the built-in relatively high-precision acceleration sensor, so as to determine whether it is the number of steps.

1. When setting up for the first time, you must fill in the information of gender, age, height, and weight honestly and accurately. These inaccuracies will affect the calculation of the acceleration sensor algorithm, resulting in inaccurate step counting, incorrect distance data, and inaccurate calorie consumption values. This results in unsatisfactory data that affects your personal exercise data.
2. The pedometer data is obtained as the acceleration in three directions for data analysis, so the wearing condition of the watch also has a certain influence on the accuracy of the results. It is necessary to ensure that the watch will not move in the wearing position (left and right, up and down) during exercise.
3. In addition, the user's swing arm posture, stride length, body shape, the smoothness of the road surface, and uphill and downhill will also affect the step count.
4. If the body moves during sleep (sleep turning, getting up and then falling asleep, etc.), in the car or driving, such as the road surface is uneven and bumpy, it is possible to generate steps.
5. Test whether the watch's function of raising the wrist to brighten the screen is normal. If raising the wrist does not work, it may be a hardware failure.
6. If the problem still cannot be solved, please go to the nearest ID208BT customer service center, and the engineer will check and provide professional after-sales service for you.

1. The shaking of the hand plus the displacement. Through the built-in relatively high-precision acceleration sensor, the displacement of the bracelet in space can be detected by integrating the acceleration, so as to determine whether it is the number of steps.
2. If there is a body movement during sleep (sleep turning, getting up and then falling asleep, etc.), in the car or driving, such as the road is uneven and bumpy, there is a certain probability of being misjudged by the sensor. Currently, we are optimizing the anti-interference algorithm of life. In the future, the false positive rate will be controlled within the acceptable range for users. 

At present, the pedometer algorithm has been optimized into an intelligent anti-interference mode. After the user wears the wrist for 10 consecutive steps, and there is no irregular movement, the bracelet will record the user's movement steps. If there is irregular movement within 10 steps, the number of steps will be recalculated.

Due to the display settings, the wristband step count can display up to 99,999 steps, after which you need to view more than 100,000 steps on the App.

The Apple Health display step count is based on the step count data of multiple App data sources as input, and then calculated according to the unique algorithm of the Apple Health platform, instead of directly displaying the step count data uploaded by Veryfit. It is recommended that customers set the bracelet supporting App as the first data source, the results will be improved, but the data cannot be guaranteed to be 100% consistent.

The walking distance is calculated by the built-in pedometer algorithm using information such as the user's height, exercise intensity, stride length, and stride frequency as input.

1. The Bluetooth of the watch is disconnected from the App.
2. During the data synchronization process, the Bluetooth is abnormal, causing the data synchronization to fail --> You can try to restart the mobile phone, restart the Bluetooth function, close the App and then reopen the App to synchronize.

1. Mobile phone incompatibility---Almost all mobile phone models on the market can be used normally with the App, but there are also very few mobile phone models that are incompatible. If you find that the mobile phone model cannot install the App, you need to provide specific information mobile phone model, our engineers will be compatible with this mobile phone model in the next update of the App.
2. The mobile phone system version is too low to be installed --> Android system requires 6.0+ or higher, and IOS system requires 9.0+ or higher.

The watch is not connected to the bluetooth of the mobile phone.

1. The network connection function of the mobile phone is turned off, please open the network connection of the mobile phone.
2. The server is abnormal.
3. The App version is too low, please download and install the latest version of the Veryfit.

1. The Veryfit is abnormal.
2. The Veryfit needs to be restarted. If restarting the Veryfit cannot be restored, the phone needs to be restarted.
3. Restart the phone and still can't restore it, you need to uninstall the Veryfit and reinstall it.
4. The App version is too low, please download and install the latest version of the Veryfit.

The Veryfit has been running in the background for Bluetooth connection, message reminder and notification.

1. Turn on Do Not Disturb mode --> In Do Not Disturb mode, the screen will automatically turn off if the wrist is not turned on.
2. The wrist lift function switch of the App is not turned on.
3. The bracelet is powered off and shuts down. Please connect the charging cable to charge the watch.

1. The gesture algorithm includes three functions:
Raise the wrist to brighten the screen: Monitor the wrist-lifting and wrist-turning movements when the screen is off. When the wrist-lifting or wrist-turning is detected to look at the watch, the screen is turned on.
Put down and turn off the screen: Monitor the down action when the screen is on. When it is detected that the arm is put down without looking at the watch, the screen will be turned off, thereby reducing the power consumption of the watch.
Flip the wrist to switch the screen: Monitor the wrist flip when the screen is on, and switch the screen when the wrist flip is detected.
2. The three functions of the gesture algorithm can be used in walking, running, riding, lying, and still scenes.

1. The three functions of the gesture algorithm are independent of each other, and the opening and closing of a function can be freely determined.
2. Precautions for wearing The dial is on the back of the hand instead of the palm The watch is oriented correctly Wear moderately, not too loose.
3. The definition of the action of raising the wrist to brighten the screen: Wrist lift: arm vertically downward → arm level, look at the back of the hand Wrist turning: arm level, look at the palm → arm level, look at the back of the hand.
4. Definition of wrist slicing action: Arm level, look at the back of the hand → Arm level, look at the palm → Arm level, look at the back of the hand (quick).

1. Connect the charging cable. When the watch is charging, press and hold the side button for more than 10s to force the watch to restart.
2. If the forced restart cannot fix the problem, check whether there is the latest firmware in the background, and try to upgrade to the latest firmware.

1. Please clean up the content of the watch message reminder and try again.
2. Connect the charging cable. When the watch is charging, press and hold the side button for more than 10s to force the watch to restart.

1. The watch and the phone are not properly connected.
2. App music control is not enabled.
3. The music player is not open to play music.

1. The watch font does not support the text of the song name --> For example, the watch only has an English font, and the name of the music played is in other languages, then the watch will not display the name of the song.
2. The watch side does not support the display of special symbols, such as emoticons, network special symbols (♞, ✔), etc.

1. The watch and the phone are not properly connected.
2. The weather forecast function in the Veryfit is not enabled.
3. The ID208BT location information permission is not enabled --> In the system settings Application permission management, enable the ID208BT location information permission.

1. Open the App→Device→click the name of the connected device, view the device information→device settings→turn on the weather push, return, the user ensures that the mobile network is unblocked, and the weather data can be seen by synchronizing the watch.
2. Turn on the location service of the mobile phone and the notification service of the App. When the location permission is enabled, the current city will be automatically located. If the location cannot be obtained, there will be no weather data. Turning on the GPS switch will make the location and weather data more accurate.
3. Make sure that the App and the watch are connected and synchronize manually (the watch itself does not automatically update the weather data, you need to connect the watch to the App to synchronize the weather data) to ensure that 100% synchronization is completed. When the watch is disconnected from the App, the weather data will not be updated synchronously, and the status of no weather data will be displayed.
4. There may be a difference of 1℃~2℃ between the weather data pushed by the watch and the weather data of the mobile phone, which is a normal phenomenon.
5. If there is still no data or inaccuracy, please turn off the weather switch and then turn it on again, and then manually synchronize the watch again to ensure 100% synchronization is completed.
6. If there is still no data or inaccuracy, go to Device-More-Restart the watch.
7. If there is still no data or inaccuracy, restart the phone, and confirm that the location service of the phone and the notification service to the App are turned on.

1. The ID208BT location information permission is not enabled --> In the system settings Application permission management, enable the location information permission of ID208BT Link.
2. The GPS function of the mobile phone needs to be turned on.

1. During the upgrade process, the distance between the watch and the mobile phone becomes farther, resulting in the disconnection of Bluetooth, and the upgrade of the watch fails (the Bluetooth connection distance of the product is about 10 meters, and the connection may be disconnected beyond this range) --> Reconnect to the Bluetooth and continue to complete the upgrade.
2. The Bluetooth function of the mobile phone is abnormal, you need to restart the Bluetooth function to try.
3. During the upgrade, ensure that the network signal is good, and the mobile phone and the watch should not be too far away.
4. The battery of the watch is not less than 40%.
5. If there is a probabilistic failure, it is recommended to re-upgrade after connecting to the App.

1. The watch needs to be charged and activated for the first time.
2. After the watch is activated, the QR code interface will be displayed, and the App can be downloaded by scanning the QR code on the watch or the instruction manual.
3. Open the App to bind by searching for the device or scanning the QR code.
4. If the watch cannot be turned on, try to charge it, try to charge it for about 10 minutes, turn it on again, and connect it to the App for operation.

1. For the first use, please connect the power supply, use the charging cable to charge the watch, and activate the watch.
2. The watch automatically shuts down due to low power --> it can be turned on again after charging for a period of time.
3. If the watch has not been used for a long time (shutdown time is more than three months or longer), the watch will automatically shut down due to low power, and the watch may need to be charged for more than an hour before it can be turned on.
4. If the watch freezes during use --> please connect the charging cable. When the watch is charging, press and hold the lower button of the watch for more than 10s to reset and restart.

1. The GPS of the mobile phone is turned off (possible reasons: the mobile phone is turned off, the mobile phone has no network, the GPS positioning is turned off, etc.)
2. The ID208BT location sharing permission is not enabled-->In the system settings application permission management, enable the location information permission of ID208BT (App application information-->Permission-->Location information-->Allow)
3. There is no GPS signal (such as indoors, shopping malls, parking lots, woods, etc.), when exercising, please avoid exercising in the above scenarios. 4. The GPS signal is weak (obstructed by high-rise buildings, and the reflection of the lakeside and the sea surface interferes). When exercising, please avoid exercising in the above scenarios.

1. When there is interference (walking, talking), the blood oxygen output value may be unstable.
2. When it is not worn properly (too loose, wrong position, sweat/water on the skin), or the user's physical characteristics are different (more hair, darker skin color), it will affect the accuracy of blood oxygen output.
3. The wearing posture is incorrect, so that the blood oxygen infrared sensor light cannot obtain the correct value --> Please wear the wearable device correctly, the arm is flat with the heart position, keep the wearable device screen up, and the wearable device and the wrist skin comfortably fit (wear a little tighter), do not wear it on the wrist joints, keep your arm still during the measurement.

1. When there is interference (walking, talking), the pressure output value may be unstable.
2. When it is not worn properly (too loose, wrong position, sweat/water on the skin), or the user's physical characteristics are different (more hair, darker skin color), it will affect the accuracy of the pressure value.
3. The wearing posture is incorrect, so that the pressure infrared sensor light cannot obtain the correct value --> Please wear the wearable device correctly, the arm is flat with the heart position, keep the wearable device screen up, and the wearable device and the wrist skin comfortably fit (wear it a little tighter), do not wear it on the wrist condyle, keep your arm still during the measurement.

1. The watch and the phone are not properly connected.
2. The App finds that the phone is not turned on.
3. The phone is on mute.

The breathing training function uses animation display and vibration reminder, which consumes more power --> It is recommended that users use it when the power is higher than 30%.

1. During charging and OTA, the alarm clock does not remind and does not vibrate.
2. On: regular exercise, aerobic capacity test, music, camera, mobile phone search, stopwatch interface, alarm clock vibrates but no pop-up reminder.
3. The alarm clock set on the App side is not successfully synchronized to the watch side. It is recommended to perform data synchronization after setting.

Notifications will only come with viberation but pop up during Stopwatch usage.

How to estimate calories:
Metric: Calories = {[weight (kg)-15]*0.000693+0.005895}*Steps(Kcal)
Imperial: Calories = {[weight(Ib)-30]*0.000315+0.00495}*Steps(Kcal)
Steps: It is directly related to the human stride, set the height, and obtain the stride through the step counting algorithm.

1. The first time it is turned on, it needs to be bound and connected to the mobile phone to synchronize the time.
2. Automatically shut down the watch when the power is exhausted, and use it again to synchronize with the App to calibrate the time.

1. The main factors that affect the fast power consumption are as follows:
a) After the watch is fully charged, it is generally used around 7 days. the battery draining fast is related to the frequency of use of the watch. If you frequently raise your wrist to brighten the screen or receive the message reminder function frequently, it will lead to battery draining fast. Compared with normal use, the number of days of using will be reduced.
b) If the watch is often turned on the sports mode during use, because the watch will continuously acquire, detect and calculate various sports data in the sports mode, the power consumption of the device will be large during the exercise, which will cause the phenomenon of battery draining fast.
c) If the product is not turned on for a long time, or if the product is not powered up in time when the product is turned off at low power, and it is placed for a long time, the battery capacity will easily decay, making the battery life of the product worse; it is recommended to keep the battery powered or turned off when not in use.
d) If the real-time heart rate is turned on, the watch detects the heart rate every 5s, which will cause high power consumption, which will shorten the battery life. It is recommended that customers turn on automatic heart rate detection according to their needs. It can reduce power consumption and prolong the battery life of the watch.

2. Other external factors:
a) During using, it is not noticed that the product needs to be charged at 5V voltage, but a high-power charger is used to cause the capacitor to be broken down. After the capacitor is broken down, it will cause abnormal power consumption and lead to fast power consumption. It is recommended to use a 5V adapter for charging.
b) If the hardware of the product fails, it is recommended to check and confirm according to several factors in point 1. If there is still a phenomenon of fast power consumption, it is recommended to contact the after-sales service center.

After binding the watch, click "Device-->Incoming Calls-->Favorite Contacts--Add", the mobile phone address book will be displayed and select the favorite contacts to be added (the address book is limited to a maximum of 10 people).