Brand SADES Model SA-808 Color Black + red Material Plastic + PU + aluminum alloy Interface Type USB length 2.1 M Impedance 32 ohm Sensitivity 111+/- 3 db dB Headphone Frequency Response 20~20.000 Hz Microphone Frequency Response 30~16000Hz Features Input power: 30mW (maximum); Mic Dimension: 6.0 x 5.0mm; Sensitivity: -54 +/- 3dB; Impedance: 2.2K; Speaker diameter: 40mm; Impedance: 32; Headphone Frequency Response: 20~20KHz; Sensitivity: 111dB +/- 3dB; Applicable scope: suitable for computer Packing List 1 x Headphones (210cm-cable) 1 x Chinese user manual