Rolex Air-King Air-King 40mm (2021) – Oystersteel
40 mm Stainless Steel – Smooth
Description
40mm of Oystersteel gives this Rolex Air-King its robust feel, paired with a smooth bezel, black dial and sapphire crystal that together create the model's clean tool-watch look. A Twinlock crown and 100-metre water resistance add everyday practicality.
Inside sits the COSC-certified Calibre 3131 automatic movement, which beats at 4 Hz, carries 31 jewels and holds a 48-hour power reserve. The calibre's anti-magnetic architecture protects accuracy in environments with magnetic fields.
An Oyster bracelet in matching stainless steel completes the watch, secured by a folding safety clasp with a 5 mm extension link for quick comfort adjustments.
This example dates from circa 2021 and remains in mint condition, delivered with its full box and papers.
Key Features
- Case: 40 mm Stainless Steel
- Dial: Black
- Movement: Automatic Caliber 3131, 48 h power reserve
- Bracelet: Stainless Steel
- Clasp: Folding safety clasp with 5 mm extension link
- Water Resistance: 100 m / 330 feet
- Crystal: Sapphire Crystal
- Condition: mint condition with full box and papers, circa 2021
Specifications
Movement
| Type | Automatic |
| Calibre | 3131 |
| Power Reserve (h) | 48 h |
| No. of Jewels | 31 |
| Frequency | 4 Hz (28,800 vph) |
Case
| Case Material | Stainless Steel |
| Case Diameter | 40 mm |
| Water Resistance | 100 m / 330 feet |
| Bezel | Smooth |
| Crystal | Sapphire Crystal |
| Dial Colour | Black |
Bracelet & Clasp
| Bracelet Material | Stainless Steel |
| Clasp | Folding safety clasp with 5 mm extension link |
| Clasp Material | Stainless Steel |