Say goodbye to noise and hello to silence with silent key design and silent click switches. Plug-and-forget nano receiver connects mouse and keyboard to computer. Hot keys to provide instant access to media controls. Silent mouse features Multi-Trac Blue LED technology, allowing user to point and click on more surfaces. Ergonomically designed for comfort grip and ease of use. 2.4GHz wireless technology. Uses 2 "AAA" batteries (included). 1-year limited warranty. English. Black.