Cesert Bluetooth 3.0 Wireless Mouse Ultra Slim Portable Optical Mouse for Mouse for PC, Mac, and Android OS Tablet (Black) In order to sync the mouse with your Bluetooth device, simply hold the left, right, and scroll buttons at the same time for 15 seconds or until your device senses the mouse Double-Sided Board design prolongs lifespan and enables accurate operation of the mouse, Easy installation- upgraded one-button (Bluetooth connection button on the bottom) hassle-free Bluetooth pairing. Compatibility - Enables use with your Bluetooth-enabled PC, Mac or Windows tablet for optimal accuracy across multiple devices. Plug-and -play connectivity. Power Saving - On/off switch on the bottom helps to conserve power. Powered by 2 AAA batteries (not included). Ultra Slim Design w/ Bluetooth Function - Its lightweight, slim design make it perfectly for travel, easy to put in your laptop bag or pockets. 3 DPI levels save operating space even on the road.Smooth surface design enables comfortable use with either hand. Stylish appearance and various color selection: Green, Pink, White and Azury. A separate USB receiver is not needed for Tonor TM Portable Ultra Slim Bluetooth 3.0 Wireless Optical Mouse.