Cherry MX Blue switches are clicky mechanical switches made by Cherry, a German keyboard switch manufacturer whose MX designs became a standard for mechanical keyboards among typists, programmers, and gamers. Their loud, tactile click stood out from quieter membrane keyboards, so the sound became instantly recognisable in keyboard reviews, typing tests, and streaming setups. As a short sample, it spread online as a handy stand-in for typing itself, and it remains popular because one brief click immediately tells a viewer that someone is writing, coding, or chatting.