Batteries Model: LQ-S1Material: Lithium polymerCapacity: 380mAhInternal Resistance: ?150m?RatedVoltage: 3.7VCharge Voltage: Max. 4.2VDischarge Cut-off Voltage: 2.75VCharge Current: Max. 1C 5ADischarge Current: Max. 2C 5AOperating Temperature:0??45?Product Size(L x W x H): About 31x24x5.1mm/1.22x0.94x0.20"Compatible Model: Smart watch DZ09, QW09, W8, A1, V8, X6