Seiko Cal. 5647 - 838

This Spring Drive model from 1966 features a 39mm Hardlex-Coated Steel case. It features a Blue Sunburst dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-c75b96f9a8d6]

Also known as: Samurai, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

11.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1966

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