AULA Demon King Mechanical Gaming Keyboard, Rainbow Backlit Black Switch It's all about color: multi-color backlit, preset 7 lighting effects, 3 customized macro lighting effects, make it a very amazing shining mechanical keyboard. All new design AULA mechanical black switch, provide a fast response feedback (NOT loud clicky sound). Great for professional gamer. Solid reliable mechanical gaming keyboard: build in metal chassis and waterproof silicone gel membrane cover on every single switch. Double-shot injection molded keycaps and full 104 keys NKRO on USB. System support: Windows 2000, Xp, Vista, 7, 8,10/Mac OS and USB 2.0 port.