Seiko Cal. 5647 - 694

This Spring Drive model from 1974 features a 39mm Hardlex-Coated Steel case. It features a White dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-c5ecac3d27eb]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

12.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

White

Jewels

25j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1974

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