SAREPO Commander 2.4 GHz Wireless Mouse Cordless Optical Mice with Nano Receiver, 1200 DPI &ndash;Stark Colors and Minimalist (Black) 2.4 GHz Wireless Technology: The wireless mouse with 1200 DPI provides a more secure and precise experience than the traditional FM radio system with an increased working distance of up to 15 meters. Extra-long battery life: The auto stand-by function switches off the mouse when the Nano receiver is disconnected after 5 minutes, or the PC is switched off to give 12 months battery life from just one AA battery. Battery life may vary based on user and computing conditions. Feel-good design: The shape is ergonomic and comfortable for all three grip styles, regardless of their hand size. The Line-by-line skidproof scroll wheel on the Mouse is the gold standard and use for both hands. It can free-spin, seemingly without the restrictions of gravity or friction. Compatibility: Plug and Play for PC, MacBook. The Precision of sensor for remarkable tracking on most surfaces except the mirror and clear glass. Operating system: Microsoft Windows XP / Windows 7 / Windows 8 / Vista / 2008.