Specification :

Resolution: 800DPI;
Rating: 3V~ 30mA;
key life over1, 000, 000 times;

1) Interface: USB;
2) Compatible with windows 2000/ XP/ 9X/ ME/ NT4.0;
3) Radio frequency: 27MHZ;
4) All-directional operation within the distance of 0.6— 1.5m;
5) Small receiver can be hidden in the mouse body, easy to take;
6) Two AAA batteries;
7) Automatic sleep mode for saving power;
8) Zoom-in and zoom-out functions;
9) Scroll up and down directly without moving your hands;
10) Optical tracking engine;
11) Convenient scroll wheel;