Smartwatch HUAWEI Watch GT with Saddle-Brown Leather-Silicone Bracelet 3.53 cm (1.39\") AMOLED touch screen display Activity tracking such as walking, running, swimming, cycling, climbing Continuous heart rate monitoring Accurate GPS position detection HUAWEI TruSleep sleep monitoring Wrist circumference: 140 to 210 mm Up to 2 weeks battery life Connectivity: Android 4.4+, iOS 9.0+ Infrared connectivity, Bluetooth 4.2 and NFC AMOLED touch screen supports slide and touch gestures Display resolution: 454 x 454, PPI 326 Step count Display of messages and calls Sensors: acceleration sensor, gyro sensor, barometer, electronic compass, automatic room light adjustment, GPS waterproof housing up to 5 ATM (approx. 50 m) Case Weight: 46 g Dimensions housing W x H x D: 4,65 x 4,65 x 1,06 cm