UltraTrack™ technology provides precise, accurate performance on nearly any surface – including clear glass • Innovative touch-sensitive, wheel-free scrolling and control • 2.4 GHz technology offers wireless freedom with effective range up to 10 m (33 ft.) • Auto power management helps maintain battery levels • On-board storage compartment protects USB receiver from loss and damage • Compact size and ambidextrous shape • Low-friction base smoothly glides over work surfaces • Plug and Play installation — Windows and Mac compatible • Lifetime Warranty