Oyster, 40 mm, Oystersteel
Waterproof to 100 metres / 330 feet
3230, Manufacture Rolex
Perpetual, mechanical, self-winding
Approximately 70 hours
Superlative Chronometer (COSC + Rolex certification after casing)
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.