Work anywhere with advancedwireless technologyProduct InformationThe HP Wireless Optical Comfort Mouse features a symmetricaldesign and rubber sides for fortable right or left-handed use. Three buttons give you the control along with a scroll wheelthat features rubber trim and a green LED illumination. Themicro receiver takes up little space so it can stay right in yorunotebook puter - and it can link with up to five patible HPdevices to save you USB ports. The mouse"s optical sensorfeatures adjustable sensitivity to work on a wide range of surfaceswhile advanced 2.4 GHz wireless technology provides less interferenceand a longer range making it easier for you to work on your puter.Product Highlights Get Comfort - Symmetric sculpted designand rubber sides provide fortable and secure grip for left or righthand use. Travel with Confidence - Optical sensorwith adjustable sensitivity (1000 CPI default 1750 CPI max) works onmany surfaces. Get Convenience - Save limited USB portsby linking up to five patible HP accessories to the same microreceiver. Be productive - 3 buttons including asmooth scroll wheel give you the control you need to acplish moreeven faster. Stay Connected - Advanced 2.4 GHzwireless technology means less interference and longer range ofoperation to work further away. Energy Efficient - Two AA batteries lastup to twelve months with this energy-efficient mouse.Product Features 2.4 GHz Long Range Wireless Link-5 Micro Receiver Optical Sensor Three Buttons Comfortable Rubber SidesIncludes Mouse Receiver 2 "AA" Batteries DocumentationSpecifications Color: Gray Wireless: 2.4 GHz WirelessTechnology Receiver: Link-5 Micro Receiver Buttons: 3 Buttons Dimensions: 115 mm x 39 mm x65 mmSystem Requirements Windows XP Vista Windows 7 Available USB PortNote: Batteries are included but are notguaranteed.