MODEL CASE:Oyster, 40 mm, Oystersteel
BEZEL:Black monobloc Cerachrom bezel in ceramic with moulded tachymetric scale
MOVEMENT:Perpetual, mechanical chronograph, self-winding
POWER RESERVE:Approximately 72 hours
BRACELET:Oyster, flat three-piece links
THE TACHYMETRIC SCALE
A key part of the model’s identity is the bezel engraved with a tachymetric scale for measuring average speeds of up to 400 miles or kilometers per hour. Blending of high technology with sleek aesthetics, the black bezel is reminiscent of the 1965 model that was fitted with a black Plexiglas bezel insert.
This model’s Black dial with snailed counters features 18 kt gold applique hour markers and hands in Chromalight, a highly-legible luminescent material. The central sweep seconds hand allows an accurate reading of 1/8 second, while the two counters on the dial display the lapsed time in hours and minutes. Drivers can accurately map out their track times and tactics without fail.
Rolex uses Oystersteel for its steel watch cases. Specially developed by the brand, Oystersteel belongs to the 904L steel family, alloys most commonly used in high-technology and in the aerospace and chemical industries, where maximum resistance to corrosion is essential. Oystersteel is extremely resistant, offers an exceptional finish once polished and maintains its beauty even in the harshest environments.