Seiko Cal. 5639 - 542

This Spring Drive model from 1967 features a 39mm Stainless Steel case. It features a Green dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-83c1b4883360]

Also known as: Sumo, Panda

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

14.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1967

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