The Oyster Perpetual Explorer 40 in Oystersteel features a distinctive black dial with characteristic 3, 6, and 9 numerals with a Chromalight display.

The dial is the distinctive face of a Rolex watch, the feature most responsible for its identity and readability. The Explorer model’s characteristic 3, 6 and 9 numerals are filled with a luminescent material emitting a long-lasting blue glow, like the hour markers and hands. Like all Rolex timepieces, the Explorer 40's dial is designed and manufactured in-house, largely by hand to ensure perfection.

The Oyster Perpetual Explorer 40 imparts a fresh elan to the sober, clean lines that have long established it as an icon. The smooth bezel in Oystersteel is robust yet elegant, and in perfect harmony with the Explorer’s iconic heritage.

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 folding clasp, which prevents accidental opening and the Easylink comfort extension link, also exclusive to Rolex. This ingenious system allows the wearer to increase the bracelet length by approximately 5 mm, providing additional comfort in any circumstance.

The Explorer 40 is equipped with calibre 3230, a movement entirely developed and manufactured by Rolex, launched by the brand in 2020. At the forefront of watchmaking technology, this self-winding mechanical movement led to the filing of several patents, and offers fundamental gains in terms of precision, power reserve, resistance to shocks and magnetic fields, convenience and reliability. Calibre 3230 incorporates the patented Chronergy escapement, which combines high energy efficiency with great dependability.

Dial

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

Case

• Case : Oyster, 40 mm, Oystersteel
• Oyster architecture : Monobloc middle case, screw-down case back and winding crown
• Diameter : 40 mm
• Material : Oystersteel
• Bezel : Smooth
• Winding crown : Screw-down, Twinlock double waterproofness system
• Crystal : Scratch-resistant sapphire
• Water resistance : Waterproof to 100 metres / 330 feet

Movement

• Movement : Perpetual, mechanical, self-winding
• Calibre : 3230, Manufacture Rolex
• Precision : -2/+2 sec/day, after casing
• Certification : Superlative Chronometer (COSC + Rolex certification after casing)
• Functions : Centre hour, minute and seconds hands. 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 Easylink 5 mm comfort extension link