The Oyster Perpetual Submariner in Oystersteel with a Cerachrom bezel insert in black ceramic and a black dial with large luminescent hour markers.
(original Blaken custom model & red blue orange watch??

BLACK DIAL

The dial??s luminescent Chromalight display is an innovation that improved visibility in dark environments, an essential feature for divers. Hour markers in simple shapes ?C triangles, circles, rectangles ?C and broad hour and minute hands enable instant and reliable reading to prevent any risk of confusion underwater.

The Submariner’s rotatable bezel is a key functionality of the watch. Its 60-minute graduations allow a diver to accurately and safely monitor diving time and decompression stops.