The Targus Blue Trace Wireless Mouse features the latest Blue Trace technology for accurate and precise tracking. Blue Trace technology combines the power of optical technology with the precision of laser technology for remarkable tracking on almost any surface including wood, granite, and carpet. The ergonomic design reduces wrist strain for comfort and the mouse is ambidextrous for both left and right handed users. Wireless capability eliminates clutter from the workspace while RF 2.4GHz technology significantly reduces cordless interference and signal drops allowing the mouse to work up to 33 feet away. The mouse comes equipped with two high-quality Energizer batteries and is designed to provide up to 12 months of battery life depending on usage. The low power indicator light lets you know when a new set of batteries are needed. Featuring a sleek, comfortable design, the Targus Wireless Blue Trace mouse provides wireless convenience and the Micro USB receiver stores underneath the mouse so it's never lost and always ready for travel. The USB Receiver is also small enough to stay plugged into your computer at all times.