Plug-and-play four-button mouse is a convenient compact solution for either notebook or desktop use. Four-way scroll wheel provides extra control and versatility. Mini-receiver packs neatly and easily within the mouse's built-in storage space, meaning no more lost components. Mouse automatically establishes wireless link with the receiver when connected. Power conservation features such as preprogrammed sleep mode, low battery indicator and manual on-off switch result in an extra long, three to four month battery life.