Benrus M Movement Specifications, Beat Rate & Dimensions

Technical Caliber Datasheet

Manufacturer	Benrus
Caliber Reference	Benrus M
Movement Type	Manual
Diameter (Lignes)	—
Diameter (mm)	27.07 mm
Height / Thickness	—
Jewel Count	15 Jewels
Beat Rate / Frequency	18,000 BPH
Lift Angle	51°
Power Reserve	38 hours
Escapement	Swiss Lever
Production Period	1945

Historical Reference & Restoration Notes

The Benrus M is a celebrated example of vintage precision engineering. Featuring 15 jewels and operating at 18,000 BPH, surviving examples are prized by collectors and restorers. For further technical reference on vintage watch movements, consult the British Horological Institute archive.

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