2.4GHz 500/1000DPI Wireless Optical Mouse w/ USB 2.0 Receiver - Grey (1 x AAA)
Model: ZY-314A - Color: Grey + black - Frequency: 2.402~2.48 GHz - Channels: 16 - Resolution: 500/1000 DPI - Working range: 10 meters - Plug and play - USB 2.0 receiver - Powered by 1 x AAA battery (not included) - Supports Windows 2000/XP/Vista Mac OS Linux