The VGP-WMS30/W Wireless Laser Mouse from Sony (White) is a compact wireless mouse, designed for use with VAIO notebook computers. The laser mouse includes an extremely compact USB receiver, which can be stowed in the mouse when it is not in use. It uses laser tracking, delivering 800dpi resolution, superior to that found in optical mice. The mouse is powered by a single AA battery which can provide up to 4 months of battery life. It has an operating range of 32 feet.