Rolex Submariner Date Desk Clock Oystersteel Black Lacquer Dial Cerachrom Bezel (Ref# 909010LN)

80mm stainless steel hemispherical case with base that allows the clock to be orientated in the desired direction, case back with Rolex Côtes de Genève decoration, fixed 60-minute graduated bezel with scratch-resistant Cerachrom insert in black ceramic, scratch-resistant mineral crystal with Cyclops lens over the date, black lacquer dial with highly legible Chromalight display with long-lasting blue luminescence, battery-operated with secular calendar and date display, battery end-of-life indicator via seconds hand jumping four seconds at a time. Not waterproof.