Razer Mechanical switches- provide optimized actuation and reset points so commands are executed with blazing fast responsiveness Engineered for durability- The switches are manufactured in-house to ensure strict requirements are met for each switch produced, resulting in a life span of up to 80 million keystrokes Fully programmable keys- every single key of the Razer Black Widow essential is customizable, so you can rebind it to another key or function, or record multiple keystrokes into a macro