Specifications - Response Frequency (Hz): 20-20000 - Impedance (ohm): 32o - Sensitivity (dB): 108dB - Talk Time (H): 2-3 Hours Or So - Music Time (H): 2-3 Hours Or So - Stanby Time (H): 1000 Hours - Charging Time (H): 1Hours - Battery Capacity: Earphone 35mAh, Charging Boc 300mAh - 2 x Bluetooh Earphone - 1 x Charging Case - 1 x USB Cable