GOTD Mini 3.5mm Jack Flexible Microphone Mic For PC Laptop Notebook Skype Yahoo Flexible Microphone Speaker for PC HP Laptop & MSN Skype Plug and play ,No tools required ,easy to install Perfect for internet chatting by MSN, Yahoo Messenger and so on. Also compatible with other band laptop, such as IBM, DELL, Apple Frequency Response: 30-16KHz. Operating Volt:1V-10V(Standard Voltage = 3V) S/N Ratio: 40dB or more. Connector:3.5mm stereo plug