Rolex 1555

Last updated: July 26, 2025

Brand

Caliber Number

1555

Production Period

1959-1965

Lignes

12.5

Diameter

28.50mm

Height

7.05mm

Power Reserve

Unconfirmed

Frequency

18,000 vph (2.5 Hz)

Jewels

25

Escapement

Swiss Lever

Anti-Shock Device

KIF

Hand Count

3

Manufacture Region

Unconfirmed

Functions

Hours, Minutes, Central Seconds, Day, Date

Rolex 1555 Description

The Rolex Caliber 1555 was the foundational automatic movement for the original Day-Date models. This COSC-certified chronometer introduced the line’s signature day and date complication. Operating at 18,000 vph, it was prized for its reliability and served as the technical base for the Day-Date’s rise to prominence. It was later succeeded by the higher-beat Caliber 1556.

Watches Using The Rolex 1555 Caliber

Gold Rolex Day-Date President watch with a brown leather strap, showing Wednesday and the 20th on its dial.
Day Date

Rolex Day-Date President 1806

1960-1978
36mm
A black leather strap Rolex Day-Date 1803 with a black dial, date window, and silver case.
Day Date

Rolex Day-Date President 1803

1959-1978
36mm
Gold Rolex Day-Date watch with a blue face, diamond hour markers, and a date display on a gold metal band—the epitome of the iconic Rolex President style.
Day Date

Rolex Day-Date President 1802

1959-1978
36mm
Gold Rolex Day-Date 1810 watch with a white dial, Roman numerals, and day and date display on a signature President gold link bracelet.
Day Date

Rolex Day-Date President 1810

1965-1978
36mm
Gold Rolex Day-Date (President 1804) watch with a brown leather strap, displaying the day and date on a cream dial.
Day Date

Rolex Day-Date President 1804

1960-1978
36mm
A gold Rolex President wristwatch with a black dial, date window, and gold metal band.
Day Date

Rolex Day-Date President 1805

1960-1978
36mm
Gold Rolex Day-Date President 1807 watch with a white dial, Roman numerals, and day and date display on a gold bracelet.
Day Date

Rolex Day-Date President 1807

1960-1978
36mm
A gold Rolex President wristwatch displaying Wednesday and the 27th, featuring a brown dial and gold bracelet.
Day Date

Rolex Day-Date President 1811

1960-1978
36mm
Gold Rolex President 1808 Oyster Perpetual Day-Date watch displaying Monday and the 3rd on its dial.
Day Date

Rolex Day-Date President 1808

1960-1978
36mm