• 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