🖱💻🖥📱BEST COMPATIBLE BLUETOOTH 4.0 CHIP: Compatible with more than 99.8% Bluetooth devices. Connect to PC, Mac Pro/Air 2017 2018 2019 laptop, notebook, Mac OS; Support Win7 Win8 Win10 Linux OS X or Android tablet.  ✅AUTO ENERGY-SAVINGSLEEPING MODE: Li-polymer batteries,high cycle life.the Auto Switch Off function will help you save energy as your bluetooth mouse will switch off when your PC is turned off or the receiver is disconnected. If you do not use the mouse for eight minutes, it will go to sleeping mode, you can press the any button to weak it up. ✅BUILT-IN BATTERY: Built-in battery,easy to charge by micro usb cable,no more need for extra AAA battery.please please keep the mouse power switch in "ON" position when charging . ✅ERGONOMIC DESIGN： Good surface coating technology given you a skin-like touch feeling. User-friendly design provide all-day comfort for work and entertainment, portable and pocket-sized perfect for travel, Mute design keeps away annoying clicks. ✅QUALITY GUARANTEE: One year quality warranty for this Bluetooth 4.0 mouse from PeiBO