T-Rex 3 Pro

Colors:
48mm: Tactical Black, Black Gold
44mm: Arctic Gold, Black Gold

Dimensions (without heart rate base):
48mm: 48 x 48 x 14mm
44mm: 44.8 x 44.8 x 13.2mm

Weight (without strap):
48mm: 52g
44mm: 46.8g

Body Material:
Case: Fiber-reinforced polymer
Bezel & Buttons: Grade 5 Titanium

Buttons: 4

Water-Resistance Grade: 10 ATM

Mic: Support

Speaker: Support

Motor: Linear motor

Material: AMOLED

Size:
48mm: 1.5"
44mm: 1.32"

Peak Brightness: Up to 3,000 nits

Resolution:
48mm: 480 x 480
44mm: 466 x 466

PPI:
48mm: 322
44mm: 353

Touchscreen: Sapphire glass

Battery Capacity:
48mm: 700 mAh (rated value)
44mm: 500 mAh (rated value)

Typical Use Battery Life:
48mm: Up to 25 days
44mm: Up to 17 days

Heavy Use Battery Life:
48mm: Up to 10 days
44mm: Up to 8 days

Accurate GPS Mode:
48mm: Up to 38 hours
44mm: Up to 26 hours

Power-Saving GPS Mode:
48mm: Up to 74 hours
44mm: Up to 51 hours

GPS Long Battery Life Mode:
48mm: Up to 85 hours
44mm: Up to 60 hours

GPS Max Battery Life:
48mm: Up to 116 hours
44mm: Up to 86 hours

Low Temperature Mode¹ ⁷(GPS on):
48mm: Up to 25 hours
44mm: Up to 14 hours

Low Temperature Mode (GPS off):
48mm: Up to 25 days
44mm: Up to 14 days

Health: BioTracker™ 6.0 PPG biometric sensor (5PD + 2LED)

Movement:
Acceleration sensor
Gyroscope sensor
Geomagnetic sensor
Barometric altimeter
Ambient light sensor
Temperature sensor

Positioning:
6 satellite positioning systems
Circularly-polarized GPS antenna

Connection: Wi-Fi 2.4GHz, Bluetooth 5.2, BLE

Materials: Silicone

Width:
48mm: 22mm
44mm: 20mm

Min. & Max. Wrist Dimensions:
48mm: 145-210mm
44mm: 140-205mm

Buckle: Classic pin buckle

Packing List:
Smartwatch (including standard strap)
Magnetic charging head (no cable)
Instruction manual

Packaging Materials: Made with 100% recyclable materials

Supported Devices: Android 7.0 and above, iOS 15.0 and above

Application: Zepp App

Sports Modes: 187

Smart Recognition of:
25 strength training movements¹⁹
8 sports movements²⁰

Template Creation²¹:
Training templates (via the Zepp App)
Interval training (via the watch)

Advanced Running Support:
Track Run mode
Smart trajectory correction
Virtual pacer

Connection to Peripheral Workout Devices:
Heart rate belt
Running power meter
Cycling power meter
Cycling speedometer
Cycling cadence meter

Sports Coach: Zepp Coach™

Workout Status: PeakBeats™

Sync to 3rd Party Fitness Apps²²:
Strava, Relive, Runkeeper, adidas Running, komoot, TrainingPeaks, Apple Health, Google Fit, intervals.icu, Treinus

Sports Convenience:
Live broadcast of sports data
Live broadcast of turn directions
Sports data stays on-screen
Conditional pause

BioCharge™: Support

24H Monitoring:
Heart rate
Blood-oxygen saturation
Stress level
Skin temperature (thermometer)

Manual Measurement:
Heart rate
Blood-oxygen saturation
Stress level
One-tap measurement

Sleep Quality Monitoring:
Sleep heart rate variability
Sleep stages (including REM)
Daytime naps
Sleep schedule
Sleep breathing quality
Sleep score

Health Assessment System: PAI

Breathing Exercise:
Support
Breath-holding training (downloadable from Zepp App)
Breath-holding test (downloadable from Zepp App)

Health reminders:
Abnormally high & low heart rate
Low blood-oxygen
High stress level
Prompts to perform stress-reducing breathing exercise
Altitude prompts for blood-oxygen test²³

Positioning:
Dual-Band: Support
Single-Band: Support
Satellite Positioning Systems: 6

GPS Modes:
Accuracy Mode: Support
Automatic Mode: Support (intelligently switches GPS settings based on signal strength, to save power)
Power Saving Mode: Support
GPS Long Battery Life Mode: Support (only supported by Hiking & Climbing sports modes)
GPS Max Battery Life: Support (only supported by Hiking & Climbing sports modes)

Navigation & Maps:
Offline Maps: Support
Turn-by-Turn Directions: Support
Point of Interest Search: Support
Round-Trip Route Creation: Support
Route Planning: Support
Auto-Rerouting: Support
Route Import: Support
Real-time Navigation: Support
Real-time Movement Tracking: Support
Save Location Point: Support
Direct Return Navigation: Support
Route Deviation Reminders: Support

Outdoor & Environment Tools:
Flashlight: Support (200 lux brightness; 300 lux brightness in Boost Mode)
Altitude Assistant: Support
Ultra-low Temperature Mode: Support
Night Display: Support
GPS Calibration: Support
Compass: Support

Information & Early Warning Alerts:
Sunrise & Sunset: Support
Moon Phase: Support
Tide Display: Support
Storm Warning Alerts: Support
High Altitude Blood-Oxygen Reminders: Support

AI Assistant:
Zepp Flow™: Support (select countries and regions)

Convenience:
Membership Cards²⁵: Support
Shortcut Cards: Support
OTA Update via Wi-Fi: Support
Events Reminder: Support
To Do List: Support

Smartphone Assistance:
Bluetooth Calling: Support
Bluetooth Phone Music Control: Support
Bluetooth Phone Camera Control
(iOS only): Support
Phone Call Notifications: Support
SMS Notifications: Support
App Notifications: Support
Call Quick Reply(Android only): Support
Find My Phone: Support


Timing:
Alarm Clock: Support
World Clock: Support
Stopwatch: Support
Pomodoro Timer: Support

Daily Life:
Weather: Support
Thermometer: Support
Sedentary Reminders: Support
Screen Lock & Password: Support
Do Not Disturb: Support
Voice Memo: Support
Morning Updates²⁵: Support
Music Storage²⁶: Support

Running & walking:
Outdoor running, Treadmill, Walking, Trail running, Indoor walking, Race walking, Track run, Ultramarathon, Dog walking

Cycling:
Outdoor cycling, Indoor cycling, Mountain biking, BMX, E-Bike, E-MTB, Gravel cycling, Bicycle commuting, Bicycle touring, Road cycling, Cyclocross

Swimming:
Pool swimming, Open water swimming, Fin swimming, Artistic swimming

Outdoor workouts:
Climbing, Hiking, Orienteering, Rock climbing, Fishing, Hunting, Skateboarding, Roller skating, Parkour, ATV, Offroad motorcycle, Mountain hiking, Rucking

Indoor workouts:
Elliptical, Rowing machine, Stair-climbing machine, Stair stepper, Spinning, Indoor fitness, Mixed aerobics, Cross-training, Aerobics, Group calisthenics, Body combat, Strength training, Step training, Core training, Flexibility training, Free training, HIIT, Yoga, Pilates, Gymnastics, Horizontal bar, Parallel bars, Battling ropes, Stretching, Bouldering, Indoor rock climbing, Ski machine

HYROX workouts:
HYROX race, HYROX PFT, HYROX training

Dance:
Square dance, Ballroom dance, Belly dance, Ballet, Street dance, Zumba, Latin dance, Jazz dance, Hip-hop dance, Pole dance, Breaking, Folk dance, Dance, Modern dance, Disco, Tap dance

Combat sports:
Boxing, Wrestling, Martial arts, Tai Chi, Muay Thai, Judo, Taekwondo, Karate, Kickboxing, Fencing, Jiu-Jitsu, Kendo

Ball workouts:
Soccer, Beach soccer, Basketball, Volleyball, Beach volleyball, Baseball, Softball, Rugby, Hockey, Table tennis, Badminton, Tennis, Squash, Gateball, Cricket, Handball, Bowling, Polo, Racquetball, Billiards, Sepak takraw, Dodgeball, Water polo, Ice hockey, Shuttlecock, Indoor soccer, Footbag, Bocce ball, Pelota, Floorball, Golf swing, Pickleball, Padel

Water workouts:
Outdoor boating, Sailing, Kayak, Rowing, Dragon boat, Paddleboarding, Indoor surfing, Tubing, Water skiing, Snorkeling, Kitesurfing, Surfing, Wakesurfing

Diving workouts:
Outdoor freediving, Indoor freediving, Recreational diving, Spearfishing

Winter workouts:
Skiing, Snowboarding, Downhill skiing, Cross-country skiing, Ski orienteering, Biathlon, Outdoor skating, Indoor skating, Curling, Bobsleigh and tobogganing, Sledding, Snowmobile, Snowshoeing, Ski mountaineering

Extreme workouts:
Skydiving, Paragliding, Wingsuit flying

Leisure workouts:
Hula hooping, Frisbee, Darts, Kite flying, Tug-of-war, Jianzi kicking, Esports, Air walker, Swing, Shuffleboard, Foosball, Motion sensing game

Board & card games:
Chess, Checkers, Go, Bridge, Board game

Others:
Jumping rope, Archery, Equestrianism, Driving, Stair climbing, Triathlon, Multisport, Snow shoveling

1. The relevant data for the military standard certification MIL-STD-810H-2019 comes from the following report: H202505284651-01EN for the 48mm version and H202509017818-01EN for the 44mm version. Prolonged exposure is not recommended as it may damage the watch and its components.

2. Suitability for, and resistance to, diving is according to EN13319:2000 (report number: SZES250700536801 for the 48mm version and SZES250700614601 for the 44mm version), ISO 6425:2018 (report number: SUER250600082871 for the 48mm version and SUER250700103471 for the 44mm version), and GB/T 18828-2022 (report number: QS2507002 for the 48mm version and QS2508003 for the 44mm version) standards.

3. The Amazfit T-Rex 3 Pro can be used as a map browsing tool to import OSM map files. The downloaded offline map must match your real location to be displayed. When choosing a point on the map for navigation, the total distance is limited. 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 most outdoor sports modes.

4. Route creation has two methods: the user can choose between round-trip planning with multiple route options, or point-to-point navigation; route rerouting can only be used with point-to-point route navigation.

5. 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.

6. According to the ISO 22810:2010 standard, the Amazfit T-Rex 3 Pro achieves a rating of 10 ATM, for a water-resistance of up to 100 meters, and is therefore suitable for splashes, snow, showering, swimming, and some high-speed water sports. It has passed third-party testing conducted by SGS, and the report number is SHES250701215571 for the 48mm version and SHES250701402671 for the 44mm version. 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 future. Do not wear the watch with a leather or metal strap when swimming - when preparing to swim, wear a silicone or fluoroelastomer strap or other suitable type. For activities where there is easy contact with bath products such as body wash, shampoo, and soapy water, if accidentally exposed, please rinse with clean water and soak for 30 minutes. For more information, please visit the support page at: support.amazfit.com

7. Live broadcast of turn-by-turn directions and training data via Bluetooth headphones or the built-in speaker supports English and Chinese broadcasts; this must be enabled in the watch setting.

8. 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 5-minute intervals, sleep monitoring enabled; static watch face selected; default screen brightness; 150 pushed messages a day; receive 3 call notifications per day; raise wrist to see watch time 100 times per day; the screen is actively used for 5 minutes per day; GPS running for 90 minutes per week.Battery Saver Mode: Limited functions are available; 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.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; Bluetooth headphones are connected to play 60 minutes of music per week; 60 minutes of Bluetooth calls per week; 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; bright screen operations (in high-brightness mode) for 15 minutes per day; GPS running for 120 minutes per week; the flashlight is turned on at default brightness for 0.5 minutes daily.Accurate GPS Mode: Turn on heart rate monitoring and GPS movement (dual-frequency, all satellites).Power Saving GPS Mode: Turn on heart rate monitoring and GPS exercise (single frequency, GPS low power consumption). GPS Battery Life Mode: This mode only works within Hiking and Climbing sports modes.GPS Max Battery Life: GPS battery life mode must be enabled within the Hiking or Climbing workout mode. To achieve GPS max battery life, only the GPS trajectory is recorded, and you must manually turn off factors such as heart rate monitoring, Bluetooth connection, and the display's "Wake On Wrist Raise" setting.

9. Real-time performance scores and VO₂ Max are only supported within Outdoor Running, Trail Running, and Track Run modes.

10. 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.

11. This product and the Zepp App are not medical devices and cannot be used for medical purposes, or as basis for diagnosis of any medical condition. Detection results are provided for reference only. Please consult professional medical institutions if you feel unwell. 24-hour monitoring of heart rate and blood-oxygen saturation (SpO₂) need 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. SpO₂alerts 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 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 the breathing exercise need to be enabled on the watch. Smart health alerts need to be enabled in the watch settings or Zepp App. 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 speed and accuracy of monitoring and measurement.

12. 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.

13. Zepp Flow™ currently supports these languages: English, French, German, Italian, Spanish, Japanese, Korean, Portuguese.

14. WhatsApp speech-to-text replies, and receiving of picture messages from instant messaging platforms, require connection to an Android phone with Android 7 or above.

15. Connection to peripheral Bluetooth devices only supports devices with BLE connection.

16. 3,000nit brightness is not supported by the Low Temperature mode or if battery life is below 30%. Depending on your environment, the watch can reach up to 3,000nit brightness after automatic brightness has been enabled in the watch settings.

17. The low temperature mode is turned off by default and needs to be enabled in the watch settings. After being enabled, whenever the temperature of the watch surface is lower than -10°C, the watch automatically enters low temperature mode, and only limited functions can be engaged at this time. Due to the physical characteristics of lithium batteries, the endurance of watches in low temperature environments will be affected to a certain extent. The battery life while in ultra-low temperature environments may vary according to the settings, operation conditions and other factors, so the actual result may differ from the laboratory data. Ultra-low temperature operation with GPS on (-10℃ to -30℃): Wear the watch all day with low temperature mode and GPS enabled; raise wrist to see watch time 100 times; 150 pushed messages a day; bright screen operation for 5 minutes per day.Ultra-low temperature operation with GPS off (-10℃ to -30℃): Wear the watch all day with low temperature mode enabled and GPS disabled; raise wrist to see watch time 100 times; 150 pushed messages a day; bright screen operation for 5 minutes per day.

18. The material used for the packaging box is 100% environmentally friendly, with naturally degradable materials including mineral-free inks and anodized aluminum used in the bronzing process.

19. Smart recognition of strength training exercises can only be engaged within the Strength Training sports mode. 25 exercises are able to be recognized at time of product release, including: 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 watch, the Zepp App can provide a list of muscle groups or exercise names to choose from.

20. Corresponding sports modes include: Outdoor Running, Treadmill, Walking, Indoor Walking, Outdoor Cycling, Pool Swimming, Rowing Machine, Elliptical. 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.

21. Training templates and interval training templates are compatible with: Strength training, Outdoor running, Treadmill, Outdoor cycling, Indoor cycling, Rope skipping, Rowing machine, Indoor fitness, Core training, and Stair climbing, Pool swimming, Mountain biking, BMX, Race waking, Track run, Cross-training, HIIT, HYROX training.

22. Availability of certain apps 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.

23. When you reach 3,000+ meters, the watch will prompt you to take the blood-oxygen saturation test when you ascend over 400 meters within 24 hours; when you reach 4,000+ meters, it will prompt you to take the test when you ascend over 400 meters within 6 hours.

24. 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.

25. 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, yesterday's activity.

26. The maximum storage space for maps, music, mini programs, exercise records, and watch faces is 26GB (due to the system space occupied, the actual space used by the user may be less than 26GB).

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.