2.4GHz Wireless Optical Mouse with USB Receiver - Black + Red (1 x AA)
Model: G2 - Color: Black + Red - Material: ABS - 2.4GHz wireless technology - Operating Range: 10 meters - Resolution: 500/1000/1600 DPI - AVAGO 5090 chip - Supports Window XP / Vista / Win7 MAC OS - Uses 1 x AA battery (included) - Comes with USB 2.0 receiver