Zeblaze GTS 3 GPS Smartwatch 1.75"

Display: 1.75" Ultra HD AMOLED, 390x450 pixels, 341 PPI, up to 1000 nits brightness, tempered glass + anti-fingerprint coating.
Operating System: Zepp OS
Health Sensors: BioTracker™ PPG 3.0 biometric sensor (supports blood-oxygen, 6PD + 2LED), accelerometer, gyroscope, geomagnetic sensor, barometric altimeter, ambient light sensor.
Health Monitoring: 24/7 Heart Rate, SpO2 (Blood-Oxygen), Sleep (stages, naps, breathing quality), Stress Level, PAI Health Assessment System.
Fitness Tracking: Built-in GPS (GPS, GLONASS, Galileo, BDS, QZSS), 150+ Sports Modes, Smart Recognition of 8 Sports.
Water Resistance: 5 ATM (up to 50 meters)
Smart Features: Amazon Alexa built-in, Offline Voice Assistant, Bluetooth phone call control, app notifications, alarm clock, sedentary reminder, weather, music control, camera control.
Connectivity: Bluetooth 5.1 BLE
Battery: 250 mAh (typical usage: up to 12 days; heavy usage: up to 6 days; battery saver mode: up to 20 days; continuous GPS: up to 20 hours).
Charging Time: Approx. 2.5 hours.
Case Material: Aircraft-grade aluminum alloy
Strap Material: Silicone (20mm quick-release)
Color: Space Grey (case), Graphite Black (strap)
Dimensions (L x W x H): 42.4 x 36 x 8.8 mm (1.67 x 1.42 x 0.35 inches)
Weight (without strap): Approx. 24.4 g (0.86 oz)
Compatibility: Android 7.0 and above, iOS 12.0 and above.