Seiko Cal. 3817 - 609

This Spring Drive model from 1971 features a 39mm Gold-Plated case. It features a Cream dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-b74c61143b2e]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

10.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Cream

Jewels

35j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1971

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