HUAWEI Watch GT 2 Smart Watch - 2-Week Battery , Bluetooth, Sport GPS, Fitness Workout Modes, spO2 Oxygen Saturation Detection, Heart Rate Tracker, Sleep Tracker, Water Resistant, 46mm Strap Astonishing Power 2 Weeks of Battery Life Accurate Positioning Outdoor Sports Modes Indoor Sports Modes Real-time Heartrate Monitoring Better Sleep Monitoring