27Mhz wireless optical mouse
operation distance 1.2m

1) wireless optical mouse          

2) USB port with 800 dpi          

3) 27 MHz radio frequence        

4) opteration distance:0.8-1.2M

5) Standard AAA batteries*2        

6) Size: 122*62*38 mm               

7) keyswitch:1,000,000  

8) Compatible with Windows    NT/ME/2000/XP