Portable and cute design with scroll wheel for fast movements and smooth control Super auto scroll without scrollbar/On Line The high-precision Wheel Mouse offers nresolutions up to 1000DPI, give you precise movent It's twice as fast and accurate as previous optical mice There's no ball to lose or get dirty Scroll wheel let you easily view long webpages or word documents When power it on, the Scroll Mouse with lightfor top, scroll wheel and brim Compact design, ideal for laptop and desktop users With decorative LED light under scroll wheel Product specifications: Support MS Window Vista?, MS Windows XP/Professional/Home Edition MS Window 98/ME/2000 Professional/ Home Edition/Mac OS 9.0 and higher Device type: USB optical mouse Key press life: 150 millions Accuracy: 1,000dpi Dimension: 105 x 59 x 36 mm (L x W x H) Weight: 0.107kg Cable lenth: 1.5 meter