Nano 2.4G Wireless Optical Mouse with DPI Switch (Black) 

Nano 2.4G Wireless Optical Mouse - a mouse with a design that is very thin and easy to use. Compatible with USB 2.0 or 1.1 Compatible with Windows 98SE, ME, 2000, XP, Vista, Windows 7 Adjustable optical sensor from 800-1200 DPI Automatically power saving, make battery working longer, Working range within 10 meters (30 Feet) , ON / OFF switch: turn on or turn off mouse power, Weight: 3 Oz.

spec:

• Nano Receiver : Small enough to plug in once and leave connected.
• Wireless : Plug in nano receiver and go wireless. 2.4GHz reliability and performance.
• Compatible with USB 2.0 or 1.1,Working range within 10 meters (30 Feet)
• Nano Slot : Convenient nano receiver storage for when you need it.Comfort Grip : Smooth, rubberized grip designed for comfort and control.
• Compatible with Windows 98SE, ME, 2000, XP, Vista, Windows 7

click here to get Nano 2.4G Wireless Optical Mouse with DPI Switch (Black) with special price.