You may have seen or heard the term "hidden deployment clasp" in reference to a watch and wondered what the heck that means. You wouldn't be the first.
Also known as a push button or butterfly clasp, it's the link in the middle that brings together both ends of a bracelet. It's considered aesthetically pleasing because a hidden deployment clasp is virtually invisible when worn.
To release the clasp, you simultaneously depress the two buttons on either side of the bracelet.