These mechanical watch movement cuff links are made from 20th century gears, levers, and jewels, and set in 18K gold. The watch innards were all taken from authentic vintage watches from the early to mid 20th century. Judging from their description I can't figure out if they're functional though. At $1,400 a set you'd expect them to be, but there's no face so they'd just be rotating openly on your sleeves. Which would be cool as hell, until you got your tie stuck in the gears and killed yourself. They'd find you dead on the ground, suffocated to death with your wrist stuck to your throat.