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

Amazfit Active 3 Premium Specifications

• Brand: Amazfit
• Model: Active 3 Premium
• Type: Premium Fitness & Lifestyle Smartwatch
• Case Size: 45 × 45 × 11 mm
• Weight: Approximately 38 g without strap
• Frame Material: Stainless steel
• Buttons: 4 physical buttons
• Display: 1.32-inch AMOLED
• Resolution: 466 × 466 pixels
• Pixel Density: 353 PPI
• Peak Brightness: Up to 3,000 nits
• Screen Protection: Sapphire glass
• Water Resistance: 5 ATM
• Battery Capacity: 365 mAh
• Typical Battery Life: Up to 12 days
• Heavy Usage: Up to 7 days
• Always-On Display: Up to 4 days
• GPS Battery Life: Up to 24 hours
• Power-Saving GPS: Up to 76 hours
• GPS: Built-in multi-satellite positioning
• Bluetooth: Bluetooth 5.3 BLE
• Health Sensor: BioTracker PPG biometric sensor
• Motion Sensors: Accelerometer and gyroscope
• Additional Sensors: Geomagnetic, barometric altimeter, ambient light and temperature sensors
• Sports Modes: 170+
• Strap: Silicone
• Strap Width: 20 mm
• Operating System: Zepp OS
• Companion App: Zepp App
• Microphone: Yes
• Speaker: Yes
• Bluetooth Calling: Yes
• Compatibility: Android and iOS
• Colours: Apex Silver, Atlas Blue, Aero White

Samsung Galaxy Fit 3 Specifications

• Brand: Samsung
• Model: Galaxy Fit3
• Type: Fitness Tracker / Smart Band
• Display: 1.6-inch AMOLED
• Display Resolution: 256 × 402 pixels
• Display Type: Full-color AMOLED touchscreen
• Body Material: Aluminium
• Strap Material: Fluoroelastomer
• Dimensions: Approximately 42.9 × 28.8 × 9.9 mm
• Weight: Approximately 18.5 g without strap
• Water Resistance: 5 ATM
• Durability: IP68-rated dust and water resistance
• Battery: 208 mAh
• Battery Life: Up to 13 days
• Charging: Magnetic charging
• Connectivity: Bluetooth
• Sensors: Accelerometer, gyro sensor and optical heart-rate sensor
• Heart Rate Monitoring: Yes
• Blood Oxygen Monitoring: Yes
• Sleep Tracking: Yes
• Stress Monitoring: Yes
• Workout Tracking: Yes
• Automatic Workout Detection: Supported for selected activities
• Emergency Features: Fall Detection and SOS features
• Notifications: Calls, messages and app notifications
• Compatible Devices: Android smartphones
• Operating System: FreeRTOS-based wearable platform
• GPS: Uses connected smartphone GPS rather than built-in GPS
• Strap: Replaceable
• Colours: Gray, Silver, Pink Gold depending on market