GYRATION GP9455-001 GyroMouse Presenter The state-of-the-art optical sensor combines with a Windows & Mac compatible scroll wheel, for superior control The extra-long 100-ft. RF range means no more line of sight -- operate your PC from anywhere in the room Patented GyroPoint technology for greater control with the most subtle hand movements Work with a number of GyroTools Presentation Effects, to add more life to any slideshow or demo Rechargeable battery for long-lasting work & demonstrations