Amazfit T-Rex Ultra 2 Smartwatch

The Amazfit T-Rex Ultra 2 rugged smartwatch is engineered for extreme outdoor environments where reliability, navigation precision, and durability are required. A Grade 5 titanium smartwatch body combined with sapphire glass protection is designed to withstand harsh weather, impacts, and demanding terrain. A vivid 1.5-inch AMOLED display with up to 3,000 nits brightness is provided so that visibility remains clear in intense sunlight, deep wilderness conditions, or nighttime exploration. With military-grade resistance and 10ATM waterproof performance, the watch is prepared for mountain expeditions, trail running, diving, and multi-sport activities.

Advanced positioning accuracy is delivered through dual-band GPS and six satellite systems, while full-color offline maps and on-watch navigation tools support confident route planning without dependence on a smartphone connection. A powerful battery life of up to 30 days is supported for extended journeys where charging opportunities may be limited. Additional outdoor tools such as a two-color emergency flashlight, storm alerts, and high-altitude monitoring prompts are integrated to assist users in unpredictable environments. More than 180 sports modes, AI-supported training guidance, Bluetooth calling, and health tracking features are combined to provide a complete performance-focused smartwatch experience.

Key Features

Grade 5 Titanium Rugged Construction

A premium titanium bezel, buttons, and back panel are used to improve durability and resistance against impacts, temperature shifts, and wear during demanding outdoor activities.

1.5" High-Brightness AMOLED Display

A crystal-clear viewing experience is supported through a sapphire-protected AMOLED screen reaching up to 3,000 nits brightness, ensuring readability under strong sunlight or low-light environments.

Full-Color Offline Maps with Route Planning

Preloaded maps are supported directly on the watch, allowing routes to be created, checkpoints to be marked, and navigation adjustments to be performed without requiring a connected phone.

Dual-Band GPS with Six Satellite Systems

Positioning accuracy is enhanced through multi-system satellite connectivity, providing dependable tracking in forests, mountains, cities, and remote terrain.

Two-Color Built-In Flashlight

Green and white flashlight modes are included for nighttime visibility and emergency signaling support, improving safety during outdoor adventures.

Up to 30 Days Battery Life

Long-duration performance is supported for extended expeditions, reducing reliance on frequent charging during travel or exploration.

10ATM Waterproof with Diving Support

Water resistance up to 45 meters is supported, enabling use during swimming, surfing, snorkeling, and recreational diving activities.

Advanced Training & Health Monitoring

VO₂ Max tracking, training load analysis, recovery insights, sleep monitoring, heart-rate tracking, and stress evaluation are integrated to support performance optimization.

Bluetooth Calling & Smart Connectivity

Calls, notifications, and navigation prompts are delivered directly through the watch speaker and microphone without interrupting movement.

Technical Specifications

Design

Colors: Black Magma
Dimensions (without heart rate base): 51 × 51 × 14.3mm
Weight (with strap): 89.2g

Body Material:
Case: Fiber-reinforced polymer
Bezel, Buttons, Back Panel: Grade 5 Titanium

Buttons: 4
Water-Resistance Grade: 10 ATM
Flashlight: Support
Mic: Support
Speaker: Support
Motor: Linear motor

Storage¹⁸:
Total: 64GB
Available: 26.7GB

Display

Material: AMOLED
Size: 1.5"
Peak Brightness¹⁷: Up to 3,000 nits
Resolution: 480 × 480
PPI: 322
Touchscreen: Sapphire glass

Battery

Battery Capacity: 870 mAh (rated value)
Typical Use Battery Life: Up to 30 days
Heavy Use Battery Life: Up to 15 days
AOD Mode: Up to 10 days
Accurate GPS Mode: Up to 50 hours
Power-Saving GPS Mode: Up to 90 hours
GPS Max Battery Life: 177 hours
Trail Running – Normal Mode: Up to 44 hours
Trail Running – Heavy Mode: Up to 30 hours
Low Temperature Mode (GPS on): Up to 40 hours
Low Temperature Mode (GPS off): Up to 32 days

Sensors

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

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

Positioning:
Dual-band positioning
6 satellite positioning systems
Circularly-polarized GPS antenna

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

Strap

Materials: Silicone
Width: 26mm

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

Buckle: Classic pin buckle

Packing List, Supported Devices & Application

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 Features

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 Apps:
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

Health Features

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: PAI²²

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 test

Outdoor Features

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

GPS Modes:
Accuracy Mode: Support
Automatic Mode: Support
Power Saving Mode: Support
GPS Long Battery Life Mode: Support
GPS Max Battery Life: Support
Trail Running – Normal Mode: Support
Trail Running – Heavy Mode: Support

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
Waypoint Reminders: 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
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

Lifestyle Features

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

Convenience:
Membership Cards²³: 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 Updates²⁴: Support
Music Storage: Support

Conclusion

The Amazfit T-Rex Ultra 2 smartwatch is designed for outdoor endurance, navigation precision, and advanced training support across extreme environments and everyday performance tracking. Reliable satellite positioning, extended battery operation, titanium durability, diving readiness, and intelligent health monitoring are combined to support demanding adventures as well as structured fitness routines.