Super easy installation: plug & play Just insert an AA battery (NOT included) and plug the nano receiver into your computer. (The USB receiver is on the back of the mouse.) No drivers are required. Quiet click & 2.4GHz stable connection: Elegant design and responsive buttons, offers a very soft click with little noise. 2.4 GHz wireless transmission technology provides a powerful and reliable connection up to 10m. Universal compatibility: Perfect for Windows XP, Windows Vista, Windows 7, Windows 10, Mac OS X 10.4, etc. Automatic energy saving mode: This mouse has NO on & off switch. However, you dont have to worry about the high power consumption problem. The mouse automatically switches to energy-saving mode after 10 minutes of inactivity. During this time, the mouse consumes almost no electricity. Then you can press any mouse button to activate the mouse and start working. Product description 2.4G WIRELESS MOUSE With advanced 2.4G wireless technology that ensures a reliable connection up to 10m. The handy, noiseless click design ensures that you can concentrate on what you are working on without disturbing others. PLUG & PLAY Super easy to use. 1. Insert the battery correctly; 2. Simply remove the USB receiver and connect it to the computer; 3. The mouse is already installed SAVE ENERGY The mouse switches to sleep mode after 10 minutes of inactivity and can be activated by clicking any SMkey. Plug & Play Noiseless Click Portable and comfortable Broad compatibility PLEASANT & SENSITIVE & LOW-NOISE This mouse has a leading button design, which makes mouse clicks very quiet and pleasant. Because the mouse uses the latest connectivity technology, you no longer have to worry about the mouse lag.