Merlin Air Mouse Wireless.
The Merlin Airmouse works as a mouse when you use it in on the desk - lift it up and it turns into a wireless trackball or PC remote
This high performance device offers variation, comfort and unparalleled flexibility in your mousing activities. By combining ergonomics and cutting edge design Merlin has created a device that allows for a variety of mousing interfaces within a single device.
Variation in work postures minimizes the risk of repetitive strain injuries, and the Merlin Air Mouse can be used as a traditional optical mouse or thumb-based trackball on your traditional worksurface. Simply lift the mouse up from your desk - and in air it opens up a world of off-desk alternative postures for mousing.
As an off-desk mouse, you slide the Merlin over the palm of your hand next to your thumb; there is little need to grip as the design nestles in your hand naturally.