bulletproof or that its internal battery is recharged wirelessly, just look at it. Built around an array of four microstep motors -- each driving one of an interwoven quartet of time belts -- the Devon Works Tread 1 creates a veritable visual symphony of precise motion to accompany the typically mundane task of checking the time. The watch was designed with the help of a Californian aerospace engineering company, which should go some way to justifying its $15,000 asking price. The rest of that justification will have to come from the "oohs" and "aahs" you incite in stupefied onlookers. Go past the break to see the promo video, it achieves rare heights of machismo that are not to be missed.