The Amazfit T-Rex Ultra Smartwatch is a beast in the world of smartwatches for the ultimate active lifestyle. They are not afraid of dust, water, cold or heat, have a bright and high-quality display, a powerful battery, accurate GPS positioning, many sports modes and health functions.

The T-Rex Ultra is the alpha male of the Amazfit smartwatch pack. The device offers the most premium stainless steel design, Wi-Fi for fast data syncing, extreme depth diving, storm alerts and a whole bunch of other tools and options. But they are heavier and more expensive, and also have fewer color options than the same second T-Rex.

Whether you're heading to the beach, climbing a mountain, walking in the desert, playing a contact sport, or anything else, keep the Amazfit T-Rex Ultra on your wrist because this watch can do it all. In the person of the “tyrannosaurus” you find a faithful and reliable companion, trainer, doctor and physiotherapist.

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