Wrist-mounted instrumentation: nerdy cufflinks

I've never had much use for cufflinks (especially since my tux and tux-shirt vanished along with three boxes of prized possessions that I mailed from San Francisco to London), but these ones appeal to the autistically instrument-obssessed nerd in me: an entire line of cufflinks with embedded clocks, thermomenters and compasses. It's enough to make me a) want to buy a pair and b) buy a new tux to wear 'em with.


(Thanks, Yoz!)