Wireless Connection: 2.4 GHz USB receiver for a stable, clutter-free experience. Design: Ambidextrous with three buttons (left, right, and middle) and a scroll wheel. Battery Life: Up to 12 months on a single AA battery. Compatibility: Works with Windows 7 , Linux, Chrome OS, and Android. Size: Compact design, weighing about 57 grams without the battery. Easy Setup: Plug-and-play installation, no additional software required.