Specification :

5-button Wireless RF Mouse with Charger Base and Chargeable Batteries
Key specifications/Special features:
* Resolution: 800dpi
* Interface: USB receiver
* Button life: over 3 million clicks
* Operating range: 1.2 to 1.5 meters
* System requirements: Windows 9X/ME/2000/XP
* Dimensions: 125 x 72 x 43mm
* Elegant design with standing mouse charger
* Wireless mouse design expands your workspace
* Radio frequency and optical technology
* 256 IDs in one channel, no interference even in case of many users
* Works on any surface except glass