It is reliable optical technology mouse ball.
Scroll wheel for easy navigation.
No mouse pad required, gives smooth, precision motion on virtually any surface.
Agree with the palm arc, comfort for either hand user.
Easy play and play setup and operation.
It supports system Windows 2000/XP/2003/Vista.
High quality and durable to use.
Weight: 175.48 g
Size: 18.513*4 cm
1 × Win2 Op-620d PS2 Scroll Wheel Optical Mouse