Have you ever seen the mouse which is no mouse pad required, just slide on any surface? Here we'd like to recommend the Innovative USB Finger Optical 3D Mouse for you, it can be used for PC Notebook Laptop Features:USB interface, Plug-and-Play, no installation needed.No mouse pad is required, just slide on any surface.Ergonomical design - reduce fatigue effectivelyReal hardware resolution 1200dpi - better buy for professional designers and game fans.Standard 3 buttons - left key, right key, scroll button includedDigital encoder technology, operate precisely, prevent faulty movement effectivelyTextile coating cable (not rubber coating) - enhance free and easy movementSpecifications:Operation voltage: DC 5VButton dynamics pressure: 60g+/-5gDimension: approx. 60 x 30 x 25 mmCompatible with MS Windows 98/2000/me/XP/Mac OS 9 and above (suitable for Vista)