Ergonomic ambidextrous contour trackball mouse design
Adjustable leg stands from 0? to 10? for personalized comfort
Built-in 1.5 in. large trackball with optical sensor
Removable trackball allows for easy cleaning
7 buttons--forward backward left right scroll wheel and DPI up/down
400 to 4800 DPI range
2.4 GHz wireless USB nano receiver with up to 30 ft. range
Power on/off switch
10-million-click life cycle durable microswitch
Includes USB receiver 2 AAA batteries and quick-start guide