1055b

AUTOMATIC • Analog • Hands: Hours, Minutes, Seconds Chronometer

Jewels

25

Frequency

18,000 vph (2.5 Hz)

Diameter

28.5 mm

Height

-

About this caliber

Second generation Rolex Day-Date movement; altered 1055. 7.1mm high instead of 7mm. Introduced around 1957

Technical details

Movement: AUTOMATIC
Display: Analog
Jewels: 25
Power reserve: -
Frequency: 18,000 vph (2.5 Hz)
Hands: Hands: Hours, Minutes, Seconds Chronometer
Diameter: 28.5 mm
Height: -
Parts: -

Rolex 1055b - Movement Specifications & Details | WatchAtlas