Premium materials (Sapphire surface, Titanium body, Ceramic rear case); Professional outdoor workouts (Skiing, Golf, Route back, Sunrise & sunset, Tide times, Moon phase, Bad weather alerts) Health monitoring (SpO2 ,TruSleepTM/Stress Test, Actiity record) Two-week battery life (wireless charging); OneHop Watch Face Transfer, 100+ workout modes. Screen: 1.39” AMOLED, 454 x 454, PPI 326 Waterproof: 5ATM Battery: 455 mAh (charging case) Sensor: GPS, PPG, accelerometer, gyroscope, barometer, Ambient light,etc Charging Time: < 2 hr (wireless) Memory: 4 GB ROM, 32 MB RAM Bluetooth: 2.4 GHz, BT 5.1, supports BLE/BR/EDR What's in the box: • 1 x Watch • 1 x Charging Cradle • 1 x Charging Cable • 1 x Quick Start Guide & Safety Information & Warranty Card