Rolex 3131
High confidenceUnlike the vintage Milgauss calibers, the antimagnetic property here is partly in the movement as well as in the case shield. The distinction matters when assessing a 116400 or 116900 whose inner shield is absent: on these references that is a serious case finding, but the watch is not left entirely unprotected in the way a shieldless 1019 is.
Specifications
- Movement manufacturer
- Rolex
- Frequency
- 28,800 vph (4 Hz)
- Jewels
- 31
- Power reserve
- 48 hours
- Winding
- automatic
- Complications
- Centre seconds
- Certification
- Officially Certified Chronometer (COSC)
Architecture
The 3130 with antimagnetic components — a Parachrom hairspring and a paramagnetic escapement — made for the Milgauss and the 40mm Air-King.
Related calibers
Related caliber
Rolex 3130
References using this caliber
- Rolex 116900Factory
Air-King · Whole production
- Rolex 116400Factory
Milgauss · Whole production
- Rolex 116400GVFactory
Milgauss · Whole production
Provenance of this record
Sources & Evidence
Primary sourceManufacturer documentation
Rolex — Perpetual movements (official technical pages)
Rolex SA
- Accessed
- 2026-08-18
Cited for
This referenceHigh confidence
Last verified: Not yet reviewed