?RGB & South-facing LED? With 14 default RGB effects and 8 backlight colors, the custom keyboard takes south-facing LED, which better illuminate the keyboard and light up gaming accessories. The compatible software is available for more DIY settings.With N-key rollover, the game keyboard can respond to the simultaneous press of multiple keys,helpful for using hotkeys and games. ?Hot Swap Linear Crystal White Switch?YUNZII AL66 wireless mechanical keyboard utilizes a high-quality gasket material for solid typing sound. The hot swappable mechanical keyboard supports 3-pin or 5-pin mechanical switches.Equipped with poron sandwich foam, poron socket foam, PET sound pads, pre lubed swicthes and stabilizers,the keyboard provides pleasant typing feeling, ideal for gamers who like custom keyboard with superb quality. ?Multi-Device and Tri-Mode Wireless Connectivity?the bluetooth keyboard, is compatible with Mac and Windows supports Bluetooth, 2.4G wireless, and wired connection.It can connect to up to 4 devices at the same time and switch between them easily.The NKRO game keyboard can work with tablet,laptops,PC,smartphone devices. It lasts up to 90 hours typing with 4600 mAh large battery capacity. ?66 Keys+One Multi-function Knob 65% Layout?YUNZII AL66 custom triple modes mechanical keyboard is compact 65% layout with 66 keys and 1 metal function knob.The knob can adjust the RGB modes, brightness and volume.This compact wireless gaming keyboard's frees up desk space for mouse and still includes function keys, arrows, and numberals that you need for typing. ?Aluminium Gasket Mounted Mechanical Keyboard ?The YUNZII AL66 is a custom wireless mechanical keyboard that has 66 keys and 1 knob.With aluminum CNC machined body and gasket mount structure, the AL66 gaming keyboard is designed for premium typing comfort and top quality. The CNC aluminum keyboard takes Anodic Oxidation that can make the keyboard durable and corrosion-resistant,providing a better typing.