Features:
1)Using radio frequency 27MHz technology
2)Has 256 ID code, no interference even many mice being used at same time
3)Automatically save power sleeping function, battery prolonged
4)Entire support USB and PS/2 port, wireless tracking
5)800dpi, valid distance up to 2.5 meter
6)Sliding on any surface (except glass)
7)Seven colors changing LED light indicate when at work
8)Super humanistic design, comfortable hand feeling
Sell USB Wireless Optical Mouse 
