Detailed Product Description1. No tracking ball is required
2. Works on most surface
3. Reliable & comfortable control
4. High speed motion detector
5. Three programmable buttons
6. Tracking speed 800 dpi
7. Dimension (DxWxH): 115x 63x 40 mm
System Requirement:
1. Windows 95 / 98/ Me / 2000 / NT, Dos 3.3 or later
2. Hard disk drive
3.
USB or PS2
Mouse port
4. IBM PC 486/586 Pentium compatible