Perixx Peripro-302 Optical Trackball offers the comfort of a mouse with the benefits of an optical trackball. Control your cursor with a simple touch of the finger or your palm! This highly accurate Optical trackball is as easy to use as a regular mouse, but it stays in one place, saving you valuable desk space and unwanted hand movement. Designed for PCs and Macs, this Trackball uses optical technology for smooth, precise cursor movement. 800 dpi combined with ultra-high speed optical technology to produce the ultimate in precision and accuracy. The precise optical tracking mechanism is also resistant to dust, reducing the need for regular trackball cleaning.

Product Feature:
55mm Optical trackball
2 standard mouse buttons for control
2 top button for back and forward
built in Scroll Wheel
High reliable micro-switches
800 DPI
USB Interface

Specifications:
ball diameter: 2.25" inch
product dimension: 5.35" (L) x 6.5" (w) x 2.75" (H)
Compatible OS: Win XP/Vista or Mac
Operating temperature : 0℃ to 50℃.
Operating humidity : 10% to 85%
Supply voltage : 5 V±5%
Current consumption : Max 40 mA
Switch : 1,000,000 life cycles
FCC, CE certification

System requirements:
PC or Mac OS X and above
Windows XP / Vista / 7
No driver needed, plug and play solution

Package contains:
Peripro-302 optical Trackball
User guide