Verbatim Wireless Multi-Trac Mouse 2.4GHz with Nano Receiver - Ergonomic, Blue LED, Portable Mouse for Mac and Windows - Black (97992) Multi-surface mouse featuring Blue LED sensor technology and efficient low power (battery included) Blue LED technology allows for use on virtually any surface including glass desk surface, hardwood floors, & granite counter tops with precision and control 2.4GHz wireless connection for lag-free performance. Plug-and-forget nano receiver connects mouse to notebook or PC Contoured design with sleek, glossy finish fits comfortably in your hand Verbatim has been a leader in data storage technology since 1969, and guarantees this product with a 1-Year limited warranty and technical support