Toughball 2.4GHZ Wireless Keyboard with Optical Trackball

Going cordless means no trailing wires and a tidy desk. The toughball has an inbuilt Optical Trackball (mouse). as you move, the mouse and keyboard moves with you. Ideal for those who like to sit back and have everything at their fingertips.Finished in a tactile rubberized finish, the Toughball not only feels good, it has a range of up to 15 meters.

Technical Details
Dimensions (WxDxH): 38.7 cm x 18.2 cm x 4.9 cm
Connectivity Technology: Wireless - RF
Wireless Receiver: USB wireless receiver
Buttons Qty: 12
Key/Button Function: Internet browsing, multimedia
Pointing Device / Manipulator: Trackball
Features: Scrolling wheel
Battery: 4 x AA type
OS Required: Microsoft Windows Millennium Edition, Microsoft Windows NT / 2000 / XP
It costs about 45-60 $.