Makes document & Internet browsing effortless Fashionable all-in-one finish with float to click solution Innovative four way optowheel scroll technology Hyper-speed turbo scroll function lets you browse quickly through documents High resolution laser engine for superb tracking performance Two Vista hot keys of Flip 3D application switch & smart IE search 1600 dpi resolution for high screen resolution of up to 1024 x 768 pixels Suitable for use in both the left & right hand