A watch complication that used to be far more popular than it is now was the "seconde morte", or "dead seconds"

this was a complication of a mechanical watch where the seconds hand would move only once per second from index to index instead of the usual several times per second

it was one of the casualties of the quartz crisis, once all these cheap quartz watches had hands that ticked at once per second nobody wanted to pay the extra for a mechanical movement that did it