Redmi Watch 4 Smartwatch AMOLED SpO2 Bluetooth Phone Call 5 ATM

Specifications Amazfit T-Rex Pro Dimensions: 47.7 X 47.7 X 13.5mm Weight: 59.4g (with strap) Body material: Polycarbonate Strap material: Silicone rubber Strap length: 122mm (long), 78mm (short) Strap width: 22mm Water-resistance grade: 10 ATM Touchscreen: Tempered glass + anti-fingerprint coating Display: 1.3" HD AMOLED Display Resolution: 360 X 360 Always-on Display Sensors BioTracker? 2 PPG bio-tracking optical sensor 3-axis acceleration sensor 3-axis gyroscope sensor Geomagnetic sensor Ambient light sensor Barometric altimeter Positioning: GPS+GLONASS, GPS+BeiDou, GPS+Galileo Bluetooth: Bluetooth 5.0 BLE Battery: 390 mAh lithium-ion polymer battery (typical value) Charging time: Up to 1.5 hours Charging method: Magnetic 2-pins Pogo Pin Battery life Typical usage: up to 18 days Heavy usage: up to 9 days GPS continuous working time: up to 40 hours Operating system: RTOS Supported devices: Android 5.0 or iOS 10.0 and above Packing list 1 x Watch body (including standard strap) 1 x Magnetic charging stand 1 x User manual The Amazfit T-Rex Pro is high-level exploration partner, supporting four Global Navigation Satellite Systems, 10 ATM water-resistance2, a blood-oxygen saturation measurement system3, a weather tracker4, a sunrise and sunset monitor4, a current moon phase display5, a compass and barometric altimeter, ultra-long 18-day battery life6 with typical use, and over 100 different sports modes7. The shape of the Amazfit T-Rex Pro is tough and solid with distinct angles. Having passed 15 military-grade tests1, the watch can battle with you through hot deserts, humid rainforests and polar glaciers. Witness endurance that braves the elements with ease.