Model: OSW-831N Display Screen: 1.32” AMOLED (466*466) BT Version: V5.3 Material: ABS/PC/Stainless Steel Battery Type: Lithium Polymer Battery Capacity: 260mAh Charging Time: 2.5 Hours Normal Using Time: 11 Days Standby Time: 31 Days Watch Size: 44*11.7mm Weight: 74.52g Waterproof: IP68 *oraimo Lab test results