Amazfit T-REX ULTRA | 20 Days Battery Life | Elite Explorer
Amazfit T-REX ULTRA | 20 Days Battery Life | Elite Explorer
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Amazfit T-Rex Ultra
Ultimate Outdoor GPS Smartwatch
316L Stainless Steel
Peak 1,000nit Brightness
Ultra-low Temperature Operation
Strong & Accurate Dual-band GPS
30m Freediving Support
Strength Exercise Recognition
Health-centered Zepp OS 2.0
20-day Battery Life



Good Design Award 2023
Update - February 2024

- Offline Map Road Name Display
- Sensitivity Option Added to Skiing Downhill Phase Auto Detection
- Optimization of Zepp Coach's Running Plan
- Watch Support for Heart Rate Push to 3rd-Party devices
- Added GPS Calibration Function

ULTRA: RUGGED DESIGN

Up to 1,000nit Brightness
The watch's HD AMOLED display can reach a peak brightness of 1,000 nits1 in strong outdoor light, providing ultra-clear visibility in any environment.

316L Stainless Steel
Conquer the outdoors with the Amazfit T-Rex Ultra.
This rugged watch is constructed with super-strong 316L stainless steel, making it the perfect adventure companion.

Mud-resistant Hardware
Built to withstand any kind of action, the patented mud-resistant bridge and buttons keep the watch's hardware free from sediment and debris.
Focus on your activities with confidence.

Adjustable Lugs
Enjoy maximum comfort for the entirety of your epic adventures.
Designed for all-day wear, the Amazfit T-Rex Ultra features patented adjustable lugs and a sweat-wicking silicone strap - perfect for adventurers of all shapes and sizes.

Ultimate Control
View your data the way you want, using the responsive touchscreen, convenient buttons, or a combination of both.
The Amazfit T-Rex Ultra gives you ultimate control over your experience.

Outlast the Ice Age
The specially designed circuitry system and battery enable the watch to function even in temperatures2 as cold as -30℃.

Military-grade Toughness
Resistant to extreme 70℃ heat and -40℃ cold - as well as humidity, shock and more - this outdoor smartwatch has proved its toughness by passing 15 military-grade tests3.
ULTRA: ELITE EXPLORER
Become the leader of the pack every time you brave the outdoors, whether your adventures take you to dense forests, giant mountains, or bustling city streets.

Strong & Accurate GPS Tracking
The watch utilizes both L1 and L5 signals for incredibly precise dual-band GPS positioning, and supports six satellite systems4 for greater global coverage.

Offline Map Support
Download an offline map5 from the Zepp App to the watch, and your position on the map will update in real-time as you navigate with a matching route file.

Conquer the Uncharted
Import route files from the Zepp App and follow your real-time movement on the display.
Save location points and store your favorite routes for quick access.
When you need to track back, the watch can show you a straight line to your starting point6.






Put on a Brave Face
Choose from over 120 watch faces and always-on displays7, including options that show key outdoor data.
Sports mode displays can also be set to stay on-screen8 until you're finished, so you can keep track of your GPS position and activity data without having to wake up the watch.
Master Your Instinct
Understand your surroundings better with the built-in compass and barometer, along with environmental reminders and a host of other useful features.

Compass

Air Pressure

Altitude

Altitude Assistant

Altitude SpO₂ Reminders

Sun

Moon

Tide

Storm Warning Alerts

Freediving Water Temperature
ULTRA: KING OF THE ACTION
Become the ultimate action hero with a choice of over 160 sports modes, including Skydiving, Hiking, Triathlon, and more. Automatic detection9 of eight sports movements makes it easy to leap into action anytime.
Dive into Adventure
Go freediving up to 30 meters10 with the Amazfit T-Rex Ultra. The ultra-bright AMOLED display keeps key information like depth and water temperature easily visible, even underwater.
This multi-environment outdoor smartwatch can resist water pressure the equivalent of up to 100 meters11, making it perfect for all your swimming, surfing and kitesurfing activities.
EN13319 & ISO6425 certifications
An internationally-recognized standard for diving accessories.


Skydiving

Offroad Motorcycle

Alpine Skiing
Compatible with 10,000+ ski maps worldwide


A Warrior in the Gym
The watch can auto-detect 25 exercise types12 within the Strength Training sports mode, tracking your reps, sets, and rest time.
After your workout, the Zepp App will display your performed exercises and which muscle groups you hit. You can even store the names of up to 100 of your own variations for personalized training logs.
A Titan of a Training Partner
The Zepp Coach™ is an AI-powered coaching algorithm that provides personalized training plans and guidance.
It monitors your fatigue level, fitness level and training status, to help you avoid overtraining and reduce the risk of injury or exhaustion.
ULTRA: MIGHTY BATTERY LIFE
Experience energy beyond extinction, with battery life that can last a super-long 20 days19.
The watch also introduces a new Endurance GPS battery mode for those who love to lose themselves in nature for long periods of time.
And when enabled, the watch's Automatic GPS battery mode will intelligently adjust GPS settings based on signal strength, to help conserve power.


20 Days
Typical Usage9 Days
Heavy Usage25 Days
Battery Saver Mode80 Hours
Endurance GPS Mode28 Hours
Accuracy GPS Mode58 Hours
Power Saving GPS ModeULTRA: HEALTH & LIFESTYLE CHAMPION
The power-efficient and health-centered Zepp OS works with the advanced BioTracker™ PPG sensor to enable 24/7 monitoring20 of heart rate, blood-oxygen and stress levels. With just a single tap, you can even test21 these three metrics, as well as breathing rate, simultaneously.

Zepp OS 2.0
The Ultimate Lifeguard
To help you stay alert and in control while on-the-go, the watch can provide reminders* for:
- Abnormally High or Low Heart Rates
- Abnormally Low SpO₂ Levels
- Altitude SpO₂ Reminders22
- Abnormally High Stress Levels
- Stress-reducing Breathing Exercise
*Alerts and reminders need to be enabled in the watch settings or Zepp App.
Enjoy the Sleep of Kings
After an intense outdoor activity, getting good quality sleep is crucial for recovery before embarking on your next adventure.
- Sleep SchedulesSleep that matches your set plan, whether daytime or night, will be recorded as your main sleep.
- In-depth MonitoringMonitor23 the light, deep and REM sleep stages, plus sleep breathing quality and daytime naps.
- Morning UpdatesGet a summary of information like the day's weather, your health data, upcoming calendar events and more24.
Explore a Rich App Ecosystem

Give your adventures a boost by downloading a range of exciting mini apps, including two new freediving-themed apps and many others, from the Zepp App.
The watch can even connect to your GoPro action camera, plus other professional devices like heart rate belts and cycling power meters, so you're always prepared for an exciting expedition.













Connect to the Zepp App
Friendly to both Android and iOS users, the Zepp App on your phone conducts health and exercise data display and analysis, features a watch face store, provides system updates for your watch, and facilitates smart device management.





Environmentally Friendly & Low Carbon
To reduce the impact on the climate and protect natural resources, we made sure to use low carbon processes and 100% environmentally friendly25 materials.
The great outdoors is important to fans of the Amazfit Adventure Series. That's why we integrated an eco-friendly philosophy when designing the Amazfit T-Rex Ultra.
To reduce the impact on the climate and protect natural resources, we made sure to use low carbon processes and 100% environmentally friendly25 materials.
The great outdoors is important to fans of the Amazfit Adventure Series. That's why we integrated an eco-friendly philosophy when designing the Amazfit T-Rex Ultra.
Design | Colors | Abyss Black, Sahara |
Dimensions (without heart rate base) | 47.3x47.3x13.45mm | |
Weight (with strap) | 89g | |
Body Material | Stainless steel: bezel, back panel, bridge and buttons, Polymer alloy middle frame | |
Buttons | 4 | |
Water-resistance Grade | 10 ATM |
Display | Material | AMOLED |
Size | 1.39" | |
Resolution | 454x454 | |
PPI | 326 | |
Touchscreen | Glass material |
Battery | Battery Capacity | 500 mAh (rated value) |
Charging Method | Magnetic charging base | |
Theoretical Charging Duration | Approx. 2 hours | |
Typical Usage Scenario Battery Life | Up to 20 days | |
Battery Saver Mode Battery Life | Up to 25 days | |
Clock Mode Battery Life | Up to 50 days | |
Heavy Usage Scenario Battery Life | Up to 9 days | |
Accuracy GPS Mode | Up to 28 hours | |
Automatic GPS Mode | Up to 46 hours | |
Power Saving GPS Mode | Up to 58 hours | |
Endurance GPS Mode | Up to 80 hours | |
Low Temperature Mode (GPS on) | 10 hours | |
Low Temperature Mode (GPS off) | 14 days |
Sensors | Health | BioTracker™ PPG biometric sensor (supports blood-oxygen) |
Movement | Acceleration sensor Gyroscope sensor Geomagnetic sensor Barometric altimeter / Depth gauge (with water temperature readings) Ambient light sensor |
|
Positioning | Dual-band & 6 satellite positioning systems | |
Connection | WLAN 2.4GHz, Bluetooth 5.0 BLE |
Other | Motor | Linear motor |
Strap | Materials | Silicone |
Width | 22mm | |
Min. & Max. Wrist Dimensions | 140mm-205mm | |
Buckle | Classic pin buckle |
Packing List | Smartwatch (including standard strap), magnetic charging cable, instruction manual |
Supported Devices | Android 7.0 and above, iOS 12.0 and above |
Application | Zepp App |

