Edox’s re-interpreted Hydro Sub North Pole Limited Edition is pretty unusual, thanks to its movable, orange crown protector. The watch will be the official timekeeper of an expedition by free diver Christian Redl to the geographic North Pole in February 2015. Redl will attempt the first-ever free dive under the North Pole’s thick ice cap. The orange crown protector besides creating a refreshingly different look may prove useful from occasional bumps. The watch’s “Master Lock” is designed as an additional, rotating ring visible below the ratcheting bezel and adds some contrast to the matte blue inlay and dial.