Truly noiseless mouse featuring Silent Technology, silent click switches and rubber covers 2 4Ghz wireless connection for lag-free performance; PC and Mac Compatible Blue LED technology allows for use on virtually any surface with precision and control; Plug-and-forget nano receiver connects mouse to computer Ergonomic design with thumb support lets you work all day with ease. Includes 2 x AAA Batteries Verbatim has been a trusted brand since 1969 and guarantees this product with 1 year limited warranty and technical support