AULA Demon King Mechanical Gaming Keyboard Professional USB Wired (Black) Ergonomic gaming style design and high quality. Aula blue mechanical switches,crips key click,strong tactile sense,up to 60 million keystroke,let gamers have boundless mechanical feeling. Heavy duty design with Aula mechanical blue switch , perfect for gamer. User-friendly design with a set of shortcut function keys cooperated with FN key. Lock/Unlock function for WIN key to avoid distraction in games.