Rolex Air-King 40mm in distinctive black dial

With its 40 mm case in Oystersteel, solid-link Oyster bracelet, and distinctive black dial, the Air-King perpetuates the aeronautical heritage of the original Rolex Oyster.

The Air-King dial features a distinctive black dial with a combination of large 3, 6 and 9 numerals marking the hours and a prominent minute scale for navigational time readings.

It bears the name Air-King in the same lettering that was designed specially for the model in the 1950s.

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.

Case

Type

  • Oyster, 40 mm, Oystersteel

Diameter

  • 40 mm

Material

  • Oystersteel

Bezel

  • Smooth

Oyster Architecture

  • Monobloc middle case, screw-down case back and winding crown

Winding Crown

  • Screw-down, Triplock triple waterproofness system

Crystal

  • Scratch-resistant sapphire, Cyclops lens over the date

Waterproofness

  • Waterproof to 100 metres / 330 feet

Movement

Type

  • Perpetual, mechanical, self-winding, GMT function

Calibre

  • 3230, Manufacture Rolex

Precision

  • -2/+2 sec/day, after casing

Oscillator

  • Paramagnetic blue Parachrom hairspring. High-performance Paraflex shock absorber

Winding

  • Bidirectional self-winding via Perpetual rotor

Power reserve

  • Approximately 70 hours

Bracelet

Type

  • Oyster, three-piece solid links

Bracelet Material

  • Oystersteel

Clasp

  • Folding Oysterlock safety clasp with Easylink 5 mm comfort extension link

Dial

Type

  • Black

Details

  • Highly legible Chromalight display with long-lasting blue luminescence

Case reference 126900

Bracelet reference 78JB20