Microsoft Wireless Mobile Mouse 4000, Graphite

Conveniently portable - great for use with notebooks Smaller size for easy transport. This sporty, stylish little mouse goes wherever you go. BlueTrack Technology allows tracking on virtually any surface. (Does not work on clear glass or mirrored surfaces.) Wireless connectivity supports range of up to 30ft. Uses 2.4GHz wireless technology. When you are on the go, the nano transceiver can remain plugged in or stowed in mouse. 4-way scrolling for easy navigation. Supports additional advanced features with included software. 4 customizable buttons. Up to 10 months of battery life. Indicator lets you know when the battery is running low.