Seiko Cal. 7156 - 840

This Automatic model from 1974 features a 41mm PVD Black case. Powered by the 7156 caliber with 25j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-491413dcba3c]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

11.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Champagne

Jewels

25j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1974

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