Seiko Cal. 5231 - 914

This Automatic model from 1978 features a 41mm PVD Black case. Powered by the 5231 caliber with 21j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-6558d1281897]

Also known as: Helmet, Bellmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

8.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Burgundy

Jewels

21j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1978

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