RGB Backlight Gaming Mice: Various RGB lighting effects can be adjusted through the bottom buttons, and the crystal clear lighting effect brings more atmosphere and fun to work and entertainment. You could adjust different lighting modes and switch off the light by pressing the lighting switch button. Plug and Play and Wide Compatibility: with USB receiver, no additional software or firmware required; Support operating system: Windows 7 / 8 / 10 / XP, Vista 7 / 8, Linux & Mac OS. Fit for Notebook, PC, Laptop, Computer, Mac book and other device.Two left side buttons are not available in Mac OS. Steps for Bluetooth ion: Set the switch at the bottom of the mouse to Bluetooth mode, long press the left/middle/right button for 4 seconds to enter pairing. If you encounter problems, you can at any time, we provide 24 hours ! 2.4GHz Wireless Bluetooth Mouse: Ensures reliable dual mode ion with an increased working distance of up to 33' (15m) and eliminates delays, dropouts and interference. Ergonomic Mouse for Laptop: Ergonomic design and skin-friendly surface offers comfortable grips and better gaming experience,long time using and playing without fatigue.Best choice for gamer and office.