Cesert 2.4ghz Foldable Folding Wireless Optical USB Mouse with Receiver for Laptop Pc (Black) 2.4GHz wireless technology, snap-in transceiver, Free moving in a maximum distance of 10 meters Sweatproof, antiskid, high accuracy; Stylish, comfortable design, suitable for both hands; It sits your hand nicely and very smooth to use. Tiny receiver (NANO), no need to code, plug and play, active tracking scanning frequency, automatic connection; With LED indicator: Folded, it sleeps and stops working; Unfolded, it continues to work. Foldable desgin, folds to 60% of its fully expanded size. After being folded up, the mouse shut up automatically. It's very convenient and easy to carry with. System supported: Windows/2000/2003/XP/Vista/2008/Win7/Win8/LINUX and above