It is readily using in PC: PC with USB port. 1. PC with audio card, but without USB port 2. It can work with MP3, MP4, and so on.. 3. It also can connect other audio devices through USB, eg: multi-audio devices, and etc. Type: Headphone Item No.:M8210MV USB Features: 1) Frequency Response: 50Hz-20kHz 2) Speaker Impedance: 32ohm 3) Driver Unit: 40mm 4) Rated Power: 20mW 5) Power Handling Capability: 30mW 6) Cable Length: 2.3M 7) Sensitivity: 115+/-3dB/mW 8) Microphone: 6?mm-58dB+/-2dB 9) Plug: USB port Microphone in Red Earphone in Black Functions: readily use in multiple ways Color: Brown and Black