Seiko Cal. 5684 - 623

This Spring Drive model from 1971 features a 34mm PVD Black case. Powered by the 5684 caliber with 22j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-8ee428d85ea3]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

14.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Green

Jewels

22j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1971

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