These cufflinks have antique watch intestines as their guts. The cogs don't wind anything, and its uncertain if they are functional at all. Regardless, Red Envelope, the premium gift store, is known for shiny gifts that have zero gadget-worth whatsoever, so we salute them for stocking such a geektastic gift.
Since I was foolish enough to order a set, I thought I'd provide a little heads-up:
The certificate of authenticity is for the watch movement, so you know the cogs and gears really came from a vintage watch, FWIW. The cufflinks themselves are manufactured by Tokens & Coins ([tokens-coins.com]), so you may be able to find a better price on them through one of the other places that carry their merch.
Since I'm not a high-class dude, my next step is to find a shirt. Cheers!