This Mini Optical mouse is an excellent tool for mobile user! Optical technology allows it to respond your fastest movements with accurate tracking on most surface. Easy plug and play operation. Excellent 3D Optical Mouse for mobile professionals. Take the Retractable Mouse on the road easily, and use it with optical precision on most surface. 800 DPI high definition optical technology offers better, more consistent tracking performance. Mini Mouse with 2 standard buttons plus a scroll wheel for fast navigation while working. Plug and Play, no driver needed. Comfortable for both left and right hands use. Clip design is great to hang on a purse, bag, backpack, key ring or wherever you want. Retractable cable can be extended up to 68cm. Compatible with Windows 2000, ME, XP and Vista. Color: Orange Dimension: ~7.5(L) x 4(W) x 2.1(H)cm Weight: 74g