The Oyster Perpetual Submariner Date in Oystersteel with a Cerachrom bezel insert in green ceramic and a black dial with large luminescent hour markers.

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. Manufactured by Rolex from a hard, corrosion-resistant ceramic, the Cerachrom bezel insert is virtually scratchproof. A luminescent capsule on the zero marker ensures legibility, no matter how dark the environment. The bezel’s knurled edge is carefully designed to offer excellent grip under water, even with gloves.

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 – triangles, circles, rectangles – and broad hour and minute hands enable instant and reliable reading to prevent any risk of confusion underwater.

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.

The Oyster bracelet is a perfect alchemy of form and function, aesthetics and technology, designed to be both robust and comfortable. It is equipped with an Oysterlock clasp, which prevents accidental opening, and an ingenious Glidelock, allowing fine adjustments of the bracelet without using any tools — and allowing it to be worn comfortably over a diving suit.

The Cyclops lens is one of the most distinctive Rolex features, and one of the most recognizable. Named after the one-eyed giant of Greek mythology, the Cyclops lens magnifies the watch’s emblematic date display for easy reading. Behind the Cyclops, as with every feature of a Rolex timepiece, lies a history of invention, research and development, and the endless search for perfection.

The calibre 3235 is a new-generation movement entirely developed and manufactured by Rolex. This self-winding mechanical movement is at the forefront of the art of watchmaking. A consummate demonstration of Rolex technology, with 14 patents, it offers fundamental gains in terms of precision, power reserve, resistance to shocks and magnetic fields, convenience and reliability. It incorporates the new patented Chronergy escapement, which combines high energy efficiency with great dependability. Made of nickel-phosphorus, it is also insensitive to magnetic interference.

Dial

• Dial : Black
• Details : Highly legible Chromalight display with long-lasting blue luminescence

Case

• Case : Oyster, 41 mm, Oystersteel
• Oyster architecture : Monobloc middle case, screw-down case back and winding crown
• Diameter : 41 mm
• Material : Oystersteel
• Bezel : Unidirectional rotatable 60-minute graduated, scratch-resistant Cerachrom insert in green ceramic, numerals and graduations coated in platinum
• Winding crown : Screw-down, Triplock triple waterproofness system
• Crystal : Scratch-resistant sapphire, Cyclops lens over the date
• Water resistance : Waterproof to 300 metres / 1,000 feet

Movement

• Movement : Perpetual, mechanical, self-winding
• Calibre : 3235, Manufacture Rolex
• Precision : -2/+2 sec/day, after casing
• Certification : Superlative Chronometer (COSC + Rolex certification after casing)
• Functions : Centre hour, minute and seconds hands. Instantaneous date with rapid setting. Stop-seconds for precise time setting
• Oscillator : Paramagnetic blue Parachrom hairspring. High-performance Paraflex shock absorbers
• Winding : Bidirectional self-winding via Perpetual rotor
• Power reserve : Approximately 70 hours

Bracelet

• Bracelet : Oyster, three-piece solid links
• Material : Oystersteel
• Clasp : Folding Oysterlock safety clasp with Rolex Glidelock extension system