Logitech Wireless Trackball
Logitech M570 Wireless Trackball Mouse
This mouse has a sculpted trackball that supports your hand and lets you rest your arm.
Logitech Unifying receiver- the tiny, wireless receiver that stays in your laptop and lets yu add compatible devices as you need them.
Super powered with up to 18 months of use with a single AA Battery.
Pointing Devise Host Interface: USB
System Requirements: Windows XP; Windows Vista, Windows 7; MAC OS X 10.5
Movement Detection: Laser
Pointing Device Connectivity: Wireless
Pointing Device Wireless: 10m
Pointing Device Wireless Radio Frequency
Scroller Type: Scroll Wheel