Amazfit T-Rex Ultra Specifications

• Brand: Amazfit
• Model: T-Rex Ultra
• Type: Rugged Outdoor GPS Smartwatch
• Case Size: 47.3 × 47.3 × 13.45 mm
• Weight: Approximately 89 g with strap
• Body Material: Stainless steel bezel, back panel, bridge and buttons with polymer-alloy middle frame
• Buttons: 4 physical buttons
• Strap: Silicone
• Strap Width: 22 mm
• Wrist Compatibility: Approximately 140–205 mm
• Display: 1.39-inch AMOLED
• Resolution: 454 × 454 pixels
• Pixel Density: 326 PPI
• Peak Brightness: Up to 1,000 nits
• Display Protection: Glass touchscreen
• Water Resistance: 10 ATM
• Freediving: Supports depths up to 30 m
• Battery Capacity: 500 mAh
• Typical Battery Life: Up to 20 days
• Battery Saver: Up to 25 days
• Clock Mode: Up to 50 days
• Heavy Usage: Up to 9 days
• Accuracy GPS Mode: Up to 28 hours
• Automatic GPS Mode: Up to 46 hours
• Power-Saving GPS: Up to 58 hours
• Endurance GPS: Up to 80 hours
• Health Sensor: BioTracker PPG biometric sensor
• Health Monitoring: Heart rate, SpO₂, stress and breathing
• Motion Sensors: Accelerometer, gyroscope and geomagnetic sensor
• Environmental Sensors: Barometric altimeter, depth gauge and ambient light sensor
• GPS: Dual-band positioning
• Satellite Systems: 6 satellite positioning systems
• Wireless: 2.4 GHz Wi-Fi
• Bluetooth: Bluetooth 5.0 BLE
• Operating System: Zepp OS
• Companion App: Zepp App
• Compatible Phones: Android 7.0 or later / iOS 12.0 or later
• Charging: Magnetic charging base
• Charging Time: Approximately 2 hours
• Colours: Abyss Black, Sahara