Kensington Orbit Wireless Trackball mouse

The Kensington Orbit Wireless Mobile Trackball gives you precise, compact and versatile control with a centered-ball design, with no wires to tie you down.
 

The 2.4 GHz wireless with storable nano receiver works wherever you do, at your home or office. And the unique touch scrolling lets you glide effortlessly through web pages and documents.
 

Features
1. A distinctive centered-ball design gives you more comfort and precision
2. Ambidextrous design for left or right-handed users
3. Compatible with Windows7, Windows XP, Windows Vista, and Mac OS X.
4. Nano Wireless USB receiver stores inside mouse battery compartment when travelling
5. On/Off switch helps prevent accidental battery drain
6. Professional matt black high gloss black finish
7. Requires 2 x AA batteries (included)
8. Secure 2.4Ghz wireless technology reduces risk of interference and is ideal for office environments
9. Two customizable buttons with Kensington TrackballWorks software
10. Unique touch scrolling lets you glide effortlessly through web pages and documents
11. USB Plug & Play