Rolex 500

Last updated: July 26, 2025
A clock with gears inside and a magnifying glass revealing a gear, symbolizing time management and analysis, enhanced by a Caliber Index to represent precision and organization.

Brand

Caliber Number

500

Production Period

1931 – 1935

Lignes

10.5”’

Diameter

23.3 mm

Height

5.6 mm

Power Reserve

Unconfirmed

Frequency

18,000 A/h (2.5 Hz)

Jewels

15 or 17

Escapement

Swiss Lever

Anti-Shock Device

None

Hand Count

2 or 3

Manufacture Region

Unconfirmed

Functions

Automatic (Perpetual)

Rolex 500 Description

The Rolex Caliber 500 is the specific, foundational automatic movement that launched the legendary “Oyster Perpetual” line in the early 1930s. Based on an Aegler Hunter 10.5”’ manual-wind caliber, Rolex attached its revolutionary, single-direction 360° “Perpetual” rotor. The added thickness of this winding mechanism necessitated the famous domed “Bubbleback” case, making this time-only movement the true origin of Rolex’s automatic watch legacy.

Watches Using The Rolex 500 Caliber

Gold Rolex Oyster watch, model 2849, features a white dial with black numbers and a sleek black leather strap.
Oyster

Rolex Oyster 2849

1937-1940
32.5mm