3D buttons
Ergonomic design, comfort for your right & left hands
USB compatible
Receiving range: 360 degrees
Effective operating distance: >10 m
Optical navigation technology
Resolution: with single 4 levels DPI 1000/1200/500/800/1000 changing button。
RF 2.4Ghz  wireless technology
65536 ID codes for each channel, avoiding interface
    problems
turn off design
Power-saving design
Auto sleeping function, wake-it-up by click on any
    buttons
Compatible with Windows 98/ME/2000/XP/2003/NT4.0/Vista
Compatible with Mac OS 9.X and  above OS 
No driver required
Operating temperature: 0°C ~ +60°C
Operating relative humidity: < 80%
NANO RECEIVER
Plug-and-Forget Nano receiver
With 4th, 5th buttons ( go forward and back off function )
1 x AAA batteries