MEMTEQ&reg; Wireless Mouse, Bluetooth Ergonomic Optical Mouse for Tablet / Laptop, 2.4GHZ (Black) Light weight and portable, with blue light LED. Resolution ratio: 800/1000/1200/1600 DPI Buttons: DPI key, left key, right key, roller key, ON/OFF key, LED light switch key. Mainly suitable for Mac OSX v10.2.6/notebook/PC etc. with built-in bluetooth. Support desktop windows 7/XP/Vista etc. only if your computer connects bluetooth dongle. (bluetooth dongle not included)