1. Always-on Display: When the screen is illuminated, it displays system content. When the screen is in standby mode, it displays the time. This function requires users to manually set "Always-on Display". The user can switch on or off this feature through the watch or Zepp App.

2. Indoor positioning services are not supported. Positioning speed and accuracy may be affected by the surrounding environment. The number of satellites connected to simultaneously, and specific satellite connections, may depend on your location.

3. The shown straight line back to the start of a journey may not be a practical route to follow due to environmental factors; this is only intended to help you keep track of your position in relation to the start point of the journey. Navigation functions are compatible with these 18 sports modes: Outdoor running, Walking, Outdoor Cycling, Climbing, Hiking, Cross-country skiing, Mountain biking, BMX, Outdoor boating, Bobsleigh and tobogganing, Sledding, Ski orienteering, Biathlon, Race walking, Snowshoeing, Trail Running, Orienteering, Open water swimming.

4. Track Run mode and Smart Trajectory Correction only support 200-meter and 400-meter running track lengths. 

5. According to the ISO 22810-2010 standard, the Amazfit GTR 4 Limited Edition achieves a rating of 5 ATM, for a water-resistance of up to 50 meters, and is therefore suitable for splashes, snow, showering, or swimming. It has passed third-party testing conducted by SWQC (SGS certification), and the report number is SWT2206-12. Remove the watch when taking a hot shower or trip to the sauna, since too much steam can affect the seal and make it less water-resistant in the future. Do not wear the watch with a leather or metal strap when swimming - when preparing to swim, change to a fluoroelastomer strap or other suitable type. For more information, please visit the support page at: support.amazfit.com

6. Live Sports Data Broadcast supports English and Chinese voice broadcasts.

7. The accuracy and sensitivity of the workout recognition feature varies from person to person, and are related to the posture and proficiency of the user during their workout. Short workout duration or frequent changes in posture may not trigger the automatic recognition feature. When you are driving a car or taking a bus, or taking part in other such activities, accidental recognition may be triggered if these activities are particularly similar to the selected workout mode. When you are conducting outdoor activities, if the GPS signal is poor or the AGPS data information has not been synchronized with the mobile phone for an extended period, these outdoor activities may be assessed as indoor activities.

8. Smart recognition of strength training exercises can only be engaged within the Strength Training sports mode, and includes: Bodyweight squats, Bodyweight straight arm front squats, Barbell squats, Tricep pushdowns, Bent over rows, Barbell bench press, Sit-up holds, Knee-touch sit-ups, Dumbbell flys, Burpees, Burpee jumps, Overhead tricep extensions, Lying tricep extensions, Lateral raises, Jumping jacks, Lat pulldowns, Deadlift, Push-up, Shoulder press, Pull up, Bicep curls, Seated cable rows, Dumbbell drag curls, Straight-arm pulldowns, Russian twists. If an exercise is not auto-recognized by the watch, the Zepp App can provide a list of muscle groups or exercise names to choose from.

9. Interval training templates are compatible with: Outdoor running, Treadmill, Outdoor cycling, Indoor cycling, Rope skipping, Rowing machine, Indoor fitness, Core training, Strength training and Stair climbing.  

10. adidas Running requires Zepp App version 7.1.0 or higher. Strava, Relive, and adidas Running availability may vary depending on your country or region. Apple Health is only available on iOS devices, and Google Fit is only available on Android devices. 

11. The battery life may vary according to the settings, operation conditions and other factors. So the actual result may differ from the laboratory data. Typical usage scenario: Heart rate monitoring is often on and measures at 10-minute intervals, sleep monitoring enabled; static watch face selected; default screen brightness; 15 minutes of Bluetooth phone calls per week, 30 minutes of music playback; 150 pushed messages a day; receive 3 call notifications per day; raise wrist to see watch time 100 times per day; test blood-oxygen 5 times per day; bright screen operations for 5 minutes per day; GPS running for 90 minutes per week. Battery Saver Mode: Only some functions are available, such as manual measurement of heart rate, blood-oxygen and stress, one-tap measurement, use of sports modes, PAI, daily activity, alarm clock, calendar, to-do list, and settings. Health monitoring functions such as heart rate, blood-oxygen and stress monitoring are turned off, and only basic sleep monitoring is enabled; Bluetooth connection is limited to BLE, raising the wrist to light up the screen is turned off, and GPS is turned off. Clock Mode: All-day heart rate monitoring, Bluetooth connection to the phone, and other functions are turned off; only step count and basic sleep information are recorded. Heavy usage scenario: Heart rate monitoring is always on and measures at 1-minute intervals, sleep monitoring, and supplementary sleep monitoring are enabled with 8 hours of sleep breathing quality monitoring, stress monitoring enabled; animated watch face selected; 60 minutes of Bluetooth phone calls per week, 60 minutes of music playback; voice assistant enabled; 150 pushed messages a day lighting up the screen display; receive 3 call notifications per day; raise wrist to see watch time 100 times per day; test blood-oxygen 5 times per day; bright screen operations for 15 minutes per day; GPS running for 90 minutes per week. Accuracy GPS Mode: Turn on heart rate monitoring and GPS movement (dual-frequency, all satellites). Balanced GPS Mode: Turn on heart rate monitoring and GPS movement (single frequency, GPS + Beidou). Power Saving GPS Mode: Turn on heart rate monitoring and GPS exercise (single frequency, GPS low power consumption).

12. 24-hour monitoring of heart rate and blood-oxygen saturation (SpO₂) needs to be enabled in the Zepp App. For heart rate monitoring, the user must enable Auto Heart Rate Monitor in the Zepp App, and the minimum value can be set to 1 minute. Abnormal heart rate alerts and the preset value need to be set in the Zepp App. To measure blood-oxygen saturation (SpO₂), please wear the watch tightly at one finger-width from the wrist, and keep your arm still for best results. SpO₂ alerts are sent if the detected rate is too low compared to the preset value, which needs to be set in the Zepp App, at a minimum of 80%. Movement, and environmental and physical characteristics can affect the speed and accuracy of monitoring and measurement. The 24-hour stress level monitoring needs to be enabled on the watch or in the Zepp App. Alerts for high stress levels are based on the preset value, and prompts for breathing exercise need to be enabled on the watch.

13. This product and the Zepp App are not medical devices and cannot be used for medical purposes, or as basis for the diagnosis of any medical condition. Detection results are provided for reference only. Please consult professional medical institutions if you feel unwell. 

14. To process the one-tap measurement and other manual metric measurements, please wear the watch tightly at one finger-width from the wrist, and keep your arm still for best results. Movement, and environmental and physical characteristics can affect the speed and accuracy of monitoring and measurement.

15. Sleep monitoring can record night sleep and naps that last more than 20 minutes. Sleep Breathing Quality tracking needs to be enabled in the Zepp App or in the settings of the watch's Sleep feature. 

16. Morning updates need to be set in the Zepp App or in the watch settings, and the currently supported content is: weather, battery, sleep, schedule, PAI, menstrual cycle tracking, and yesterday's activity. 

17. To see the full list of 15 countries/regions and 14 languages supported, as well as how to activate and use Alexa on your Amazfit GTR 4 Limited Edition, please visit support.amazfit.com. 

18. The maximum storage space for music is 2.3GB (due to the system space occupied, the actual space used by the user may be less than 2.3GB); based on 5-10MB per song, it can store up to 270-470 MP3 songs. 

19. Due to the device's storage limit, only a maximum of 20 membership cards can be added to the same account. Supported codes include Code 128, Code 39, UPC A, EAN 13, and EAN 8, and QR codes.

20. The HUNT Fitness Study indicates that people who maintain a PAI score of 100 or higher show lower risk of hypertension, heart disease, and type-2 diabetes. HUNT Fitness Study: This study was conducted by Professor Ulrik Wisloff of the Faculty of Medicine, Norwegian University of Science and Technology. It lasted for more than 35 years and had more than 230,000 participants. To use this function, all-day heart rate monitoring must be enabled. 

21. This feature is only supported by Android devices with Zepp App version 6.10.0 or higher version installed. 

The product images and screen content shown above are for reference purpose only. The actual product (including but not limited to its appearance, color and size) and screen display content (including but not limited to the background, UI and graphics) may differ slightly.

The data that is provided on this page without a specified source is taken from internal laboratories or supplier data, and has been obtained under a specific test environment. The product's actual performance may differ slightly due to product individual differences, software versions, usage conditions and environmental factors.

To provide product information, specifications and characteristics as accurately as possible, our company may adjust and revise the text descriptions, images and other content in the above pages at any time. Due to real-time changes in product batches and production-supply factors, we may modify the above information as required without providing a special notice. 

The radio waves generated by the equipment may affect the normal operation of implanted medical equipment or personal medical equipment, such as pacemakers and hearing aids. If you use these devices, please consult their manufacturers for restrictions on using this device. 

The product should not be worn in environments with strong magnetic fields such as MRI machines or medical imaging machines, as they may cause damage to the watch.