Specification Dimensions: 4.68x2.64x1.54 in Weight:0.20 lb DPI: 800-1200-1600 Operating Range: up to 10 m Compatibility: Work with Bluetooth mode works with Windows,(Win8 and above all) Android,( Android4.3 and above all) MAC OS system(mac os10.10 and above all. No code required and intelligent connectivity. 2.4G mode works for laptop, desktop, smart TV and any device with USB port.(NOTE:BLUETOOTH works ONLY with 4.0 and ABOVE VERSION.) How to use it: 1. swith the ON/OFF button to ON, the light on indicate operating Method of switching mode:Press ON/OFF button about 1 second to switch mode,long press mode key (6-8 seconds) for matching pattern,red light for 2.GHz mode,blue light forBluetooth mode. A. 2.4Ghz mode (Note: 2.4GHz mode is System Default at the first using time) ①Remove the wireless receiver ② Insert the computer USB ③Red light off the connection is successful B.Bluetooth mode ① Turn on the device's Bluetooth function (You do not need to plug the wireless adapter into your computer when using Bluetooth mode.) ②Mouse in Bluetooth mode, press the mode button until the blue light flash (6-8 seconds) ③ Search the product of Bluetooth, the name is (BLUETOOTH MOUSE 4.0) ④Click on the pairing for Bluetooth connection, to be connected successfully, you can use this product's Bluetooth mode. About recharge:Build-in 800mAh rechargeable battery capacity,fully charge the mouse with the USB cable connecting to your PC’s USB port,power bank or the adapter,so convenient,also you can charge while you using.When recharging,flashing indicator will be red,when charging fully,flashing indicator will be out.