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Guild Home > Calibers > Benrus > Benrus M

Benrus M Movement Specifications, Beat Rate & Dimensions

BENRUS • Benrus M DIAMETER: 27.1 mm | JEWELS: 15 Jewels | FREQ: 18,000 BPH ARCHIVE SPEC
Original Horological Blueprint • Benrus Benrus M Architecture

Technical Caliber Datasheet

ManufacturerBenrus
Caliber ReferenceBenrus M
Movement TypeManual
Diameter (Lignes)—
Diameter (mm)27.07 mm
Height / Thickness—
Jewel Count15 Jewels
Beat Rate / Frequency18,000 BPH
Lift Angle51°
Power Reserve38 hours
EscapementSwiss Lever
Production Period1945

Historical Reference & Restoration Notes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 authentic restored timepieces and bespoke pocket-to-wrist conversions, visit available pieces.

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