Features:
Optical sensor technology have replaced the tracking ball mechanics that it scans your computer 1,500 times per second to pinpoint accuracy. This exciting new technology will enhance you with its smooth and perfect operation.

- No tracking ball is required

- Works on most surface

- Reliable & comfortable control

- High speed motion detector

- Three programmable buttons

- Tracking speed 800 dpi

- Dimension (DxWxH): 94x 51x 33 mm

System Requirement:

- Windows\"95/98/Me/2000/NT, Dos 3.3\" or later

- Hard disk drive

- USB or PS2 mouse port

- IBM PC 486/586 Pentium compatible