Wireless Optical Mouse:
1): 2.4GHz Wireless, Comfortable Shape design.
2): Auto sleep/wake function for power saving.
3): 10 M working distance.
4): Mini receiver, USB nano receiver allows plug and play.
5): 2 X AAA alkaline batteries (included).

>no cord design eliminates cord tangles on your desktop
> Easy to set up and use with out any angel or direction limits
> Be more productive and efficient than ever
> Optical mouse comes with 1000DPI high resolution
> Frequency: 2.4GHz