BW 3.5mm Professional Condenser Sound Mic Microphone For PC Laptop Skype Recording - Plug and Play Professional dynamic 3.5mm Microphone for PC or Mac Operation voltage: 1.5V, Length of cord: 1.5m 3.5mm stereo plug fits for all kinds of PC. Plug and Play, No need to install driver Special design for chatting over QQ,MSN,SKYPE and singing on the internet,,it's also perfect for voice recording.