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Rolex 3075
Last updated: July 26, 2025
Brand
Caliber Number
3075
Production Period
1981-1988
Lignes
12.5”’
Diameter
28.5 mm
Height
6.30 mm
Power Reserve
Unconfirmed
Frequency
28,800 bph (4 Hz)
Jewels
27
Escapement
Swiss lever
Anti-Shock Device
KIF
Hand Count
4
Manufacture Region
Unconfirmed
Functions
Hours, Minutes, Seconds, Date (Quickset), GMT
Rolex 3075 Description
The final evolution of the original GMT-Master caliber, powering the Ref. 16750. This COSC-certified movement introduced crucial upgrades like a high-beat frequency (28,800 bph), hacking seconds, and a quickset date. While the 24-hour hand was not independently adjustable, the movement represented a significant leap in convenience and precision for the GMT-Master line before the advent of the GMT-Master II.
