The HP USB Optical Mouse utilizes the latest optical sensing technology, recording precise motion over a variety of surfaces without a mouse pad

• Reduce sticking and constant cleaning with optical tracking system that works through light with less moving parts for greater durability than ball-based mice.
• Users benefit from a smooth, contoured shape that fits both hands and a wheel that functions as a third button.
• The optical sensor within the HP US Optical Scroll Mouse employs a scan rate of 800dpi and enables crisp motion without a mouse pad, ball or roller.
• Left-handed or right-handed users can enjoy a contoured shape that suits either preference.