Key switches
Underneath each key of a mechanical keyboard is a mechanism called a switch. These switches have a variety of response, noise, and travel times, which make them attractive to gamers and heavy typists. When pressing a key, you get instant tactile feedback. This makes typing easier on the fingers. You also get audio feedback, that unique clicky sound, the sound of a traditional keyboard. The feedback helps you recognize a keypress, and it can help improve your productivity as well as your speed when using a keyboard.