Seiko Cal. 5639 - 136

This Automatic model from 1974 features a 36mm Stainless Steel case. It features a Burgundy dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-49d5d4573707]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

12.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

29j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1974

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