Amazfit T-Rex 3 Pro Rugged Smart Watch - Black

T-Rex 3 Pro

Whether you are pushing your limits on a rugged trail, diving beneath the surface, or training for your next big race, the T-Rex 3 Pro is built for those who train without compromise. Crafted with tough, premium materials and packed with advanced features, it is made to withstand the harshest conditions while delivering precise tracking and performance insights. With all-day comfort and exceptional battery life, it keeps you connected to your goals and in control of every moment - no matter where your adventure takes you.

- Scratch-resistant sapphire glass with a vibrant 1.5" AMOLED display (48mm)
- 6 satellite system positioning with offline maps, route planning, and POI search
- 180+ sport modes including hiking, rucking, and recreational diving.
- Built-in Two-Color LED Flashlight with Boost Mode
- Built-in Speaker and Microphone for Bluetooth Calling
- Military-grade design with a grade 5 titanium bezel and buttons
- Up to 25 days battery life (48mm)

Rugged by Design

The T-Rex 3 Pro is built different, just like you. Take on any adventure with military-grade toughness¹, dual diving certification², a scratch-resistant sapphire glass screen, and a vibrant 3000-nit AMOLED display that stays clear even under direct sunlight. This ultra-high brightness ensures exceptional visibility in any outdoor condition, so your data is always easy to read. All of it is framed by a corrosion-resistant, high strength grade 5 titanium bezel.

Endure Any Environment

Along with hardware that's resistant to temperatures as low -40℃, the T-Rex 3 Pro features a smart Low Temperature Mode that, when enabled, keeps vital software functions of the watch operational in environments as cold as -30℃. Enable Low Temperature Mode and Glove Mode to stay in control even in extreme cold.

Ski Mapping

Find your nearest ski resort and navigate with detailed maps that include cable cars, color-coded slopes, and clear route guidance for groomed runs as well as off-piste, backcountry, or telemark routes.

Points of Interest Search

Need lodging or the nearest convenience store for a quick pit stop? With offline maps³, search nearby points of interest right from your watch.

Industry-Leading GPS

Accurately track every move, even under tall buildings or dense tree cover. Dual-band support from six satellite systems⁵ delivers a fast, reliable connection, ideal for demanding outdoor adventures from rugged hikes to intense trail races.

Every Beat Counts

The T-Rex 3 Pro is equipped with our advanced BioTracker™ sensor, delivering highly accurate heart-rate tracking even in challenging outdoor conditions. For those who want to push precision to the limit, pair it with the Helio Strap - our industry-leading arm-worn heart-rate monitor. Together, they provide pro-grade accuracy you can rely on, from steep hikes to intense trail races, ensuring every training decision is backed by the most precise data possible.

Built for Every Adventure

With over 180 sport modes, including winter sports like skiing and snowshoeing, it adapts seamlessly to your training lifestyle and helps you perform at your best every step of the way. From the ocean to the mountains, the T-Rex 3 Pro is designed to keep up with you.

Pro-Grade Waterproofing

With 10 ATM water-resistance⁶ and certified for diving to a depth of 45m, the T-Rex 3 Pro is ready for all your freediving and scuba diving excursions

When the Trail's Dark, Stay Bright

Train earlier, go longer, and stay visible with a built-in two-color flashlight made for low light and late hours. Choose soft red for low interference, bright white for clarity, switch to Boost Mode for powerful visibility when it's needed. An SOS signal adds extra peace of mind wherever you roam.

Stay Connected Without Stopping

Take Bluetooth calls from the trail, use Zepp Flow™ to reply to instant messages hands-free, listen to training notifications⁷, and more with the built-in speaker and mic. The T-Rex 3 Pro lets you do more, from anywhere.

Zepp App, Powering Amazfit

Your free companion for checking nutrition, fitness progress, sleep recovery, and trends is now able to simultaneously connect different Amazfit devices, like the Helio Strap, for advanced data fusion that sharpens training analysis - all in one easy-to-use app.

Up to 2-3 Weeks of Battery Life

Designed to keep up with your longest adventures, this watch delivers exceptional battery life⁸ so you can focus on the journey, not the charger. Whether you're tackling multi-day treks, race weeks, or remote missions, it stays powered when you need it most.

- Up to 25 Days with Typical Use
- Up to 38 Hours with Accurate GPS Mode
- Up to 85 Hours with GPS Long Battery Life Mode

Real-Time Performance

See how you're performing compared to your previous workouts⁹.

Total Voice Control

Zepp Flow™ gives you full control of your watch using just your voice¹³. Easily adjust settings, check your Zepp Coach™ progress, and more.

Proven by UTMB Champions

In 2025, Ruth Croft - one of the world's top trail runners - won the toughest 100-mile mountain race with Amazfit T-Rex 3 Pro. Alongside her, American runner Rod Farvard placed in the top 10 on the same brutal course.When a watch performs in the world's hardest conditions, you know it's ready for your toughest adventures.

What's in the Box

*USB-C charging cable not included.

Notes

For more information: https://us.amazfit.com/products/t-rex-3-pro
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).