Specifications

1, offers the convenience of the wireless Bluetooth interface
2, delivers the accurate response of optical technology
3,  features cmfortable, ergonomic design.
4, works at distances of up to 10 meters (33ft)
5, installs and operates easily
6, automatic frequency modulation technology to avoid the inerference of other signal  frequency. 7, unique super energy saving mode, battery life longer than similar products by 50%. works with windows 98 se, 2000, xp, and server 2003,
8, navigates easily using four buttos and the scroll wheel.
10, Works with mac os xv 10.2.6, if youre the MAC computer is with the Bluetooth fumction
11, comes with 1 year warranty
12, please take a Bluetooth dongle first if your computer were without, Bluetooth function, the  packaging is without Bluetooth dongle.