More Details: Specifications:          General Specification             Brand Name        Letv             Color        White             Cable Length        1.2m           Technical Parameters             Rate Power        5mW             Maximum Power  In  Digital State        40mW             Speaker Copper Wire        Φ0.04mm Copper clad aluminium             Speaker        Φ13.98mm             Magnetic Flux        TBD             Digital Audio Decode Play        96k\/24bit             Mic Sensitivity        -40±3dB@1kHz 0dB=1V\/Pa             Mic Impedance        TBD             Call Delay        <20ms              Output Level        417mVrms             THD        -71dB(0.028%)             Noise Floor        9μV             SNR        92dB             DYN        92dB             Crosstalk        89dB             Mic Frequency Response        20-20kHz             Frequency Response        20Hz-20kHz             Distortion        100Hz<2%、 800Hz<1%            1kHz<1%、 8kHz<1%            10k<3%            AT 3mW    Package  Included:                  1 X Letv Type-C Headphone