Mechanical SwitchThe mechanical switch provides a tactile and clicky feedback where you feel and hear clearly when a key has been pressed. These switches are also built to last with a lifespan of 50 million keystroke lifecycle. Programmable DriverThe easy-to-use programmable driver allows for full customization. Whether you want to assign a function or a macro to a particular key, the friendly user interface can accomplish with ease. 16.8 Million Color The backlit LEDs have a 16.8 million color option. Through the programmable driver, you can define each key with its own unique color tailored to your specific taste! Double Injection KeycapsThe keycap legends will never wear out because the keycaps are made with two plastic layers molded into one another, making worn out keycaps a thing of the past! Multimedia and LED HotkeysThe AKB-640EB has various built-in hotkeys. With just a simple click you can enjoy the convenience of different windows functions and various lighting effects.