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Guild Home > Calibers > Gruen > Gruen 225

Gruen 225 Movement Specifications, Beat Rate & Dimensions

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Technical Caliber Datasheet

ManufacturerGruen
Caliber ReferenceGruen 225
Movement TypeManual
Diameter (Lignes)—
Diameter (mm)15.35 mm
Height / Thickness3.5 mm
Jewel Count17 Jewels
Beat Rate / Frequency18,000 BPH
Lift Angle51°
Power Reserve38 hours
EscapementSwiss Lever
Production Period1955

Historical Reference & Restoration Notes

The Gruen 225 is a celebrated example of vintage precision engineering. Featuring 17 jewels and operating at 18,000 BPH, surviving examples are prized by collectors and restorers.

Restoration enquiries:
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