- Brand: Amazfit
- Model: GTR 4
- Type: Smart Watch
- Display:
- Size: 1.43 Inch
- Resolution: 466 x 466
- AMOLED Touchscreen
- Tempered Glass Anti-fingerprint Coating
- System Requirements: Android 7.0 and Above, iOS 12.0 and Above
- Operating System: Zepp OS 2.0
- Connectivity: WLAN 2.4GHz Bluetooth 5.0 and BLE
- Support: Microphone, Speaker
- Sensors: BioTracker 4.0 PPG Biometric Sensor (Supports Blood-Oxygen, 4PD 2LED), Acceleration Sensor, Gyroscope Sensor, Geomagnetic Sensor, Barometric Altimeter, Ambient Light Sensor
- Features: Blood-Oxygen Saturation Measurement - Monitoring Heart Rate and Stress Levels - Breathing Rate - PAI Health Assessment System - Sleep Monitoring - 150 Sports Modes - PeakBeats Workout Status - 6 Satellite Positioning Systems - Virtual Pacer - Personal Online Assistant (Alexa) - Offline Voice Assistant - Answer Bluetooth Phone Calls - Advanced Fitness Support - Swimming Heart Rate Monitoring - GPS Antenna Technology - Morning Update Function - Wallet
- Battery Capacity: 475 mAh
- Battery Life: Up To 7 Days (Heavy Usage), Up To 14 days (Typical Usage), Up to 24 days (Battery Saver)
- Charging Method: Magnetic Charging
- Charging Duration: Approximately 2 Hours
- Water-Resistant: 5ATM
- Dimensions: 46 x 46 x 10.6mm
- Material: Case: Aluminum - Strap: Nylon
- Color: Case: Black - Strap: Racetrack Grey
- Warranty: 6 Months