Speaker Radius 40mm Impedance 32 Frequency Responses 20Hz 20KHz Sensitivity 123dB3dB, 121dB 3dB Output Power 30mw Mic Impedance < 2.2K Sensitivity -42dB3dB Cable Length 2.2M Earcap PU Plug USB Feature Virtual 7.1 Channel Surround Sound Mobile Device *USB OTG (Sesuai dengan tipe mobile device kalian) *Not Include