Oris Aquis Titan Chronograph

Not for the slender wristed, this robust 46mm titanium watch features a scratch-resistant tungsten unidirectional timing bezel and a helium valve at the nine o'clock position. Its luminous dials and details can be viewed either in a dark room or at 1,640 feet, the crushing depths to which this self-winding chronograph is proved. The Oris' case back is engraved with a foot-meter conversion scale. [$3,750; oris.ch]