Usbkingdom Bluetooth 3.0 Wireless Mouse Ultra Thin Portable Travel Office Optical Slim Computer Mice 800/1200/1600DPI,4 Buttons for Notebook PC Laptop Macbook Windows Android Tablet (Black) Ultra-thin, Lightweight and Fashion: Lightweight and mini slim design makes it perfect for use at home, office or on-the-go. Slim design makes it easy to put in your laptop bag or pockets.Pure colors will make your computer look fresh and out-going Wireless Bluetooth 3.0 mouse, optical tracking technology, works on many different surfaces(not include smooth surfaces such as glass), Supports Bluetooth-enabled PC, laptop, MacBook, Android tablet, Not compatible with Apple phones and Apple tablets Material: ABS,4 Buttons,Power Supply:2x AAA batteries(Not included),3 DPI Levels: 800/1200/1600,Dimension:112*57*25mm,Net Wight: 40g Built-in software solutions with Bluetooth human interface device and comply with the standard version of the Bluetooth SIG Bluetooth 3.0 Note:Please turn on the switch,press the 3 buttons (left button,right button,scroll wheel) together at same time for about 3-5 seconds.The computer will recognize the bluetooth device