Mini USB mouse, with comfortable ergonomic holding shape.1600DPI optical resolution, accurate positioning.3 key mouse with telescopic wire, compact and portable.Plug and play USB interface, suitable for most laptop and computer.Type: Mini USB MouseMaterial: ABSKey Numbers: 3 KeysMouse Type: Wired MouseDPI: 1600DPIKey Life: 1 million TimesInterface: USB InterfaceOperation Systems: for Win 98/7/2000/ME/XP/VistaFeatures: Universal, Telescopic, Mini Size, 3 Keys, Optical MouseSize: 76mm x 40mm x 24mm/2.99" x 1.57" x 0.94" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x USB Mouse