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 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 makes over desk space for mouse and still includes function keys, arrows, and numberals that you need for typing 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