Seiko Cal. 5638 - 390

This Hand-Winding model from 1981 features a 40mm Gold-Plated case. It features a Cream dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-8e0d048ee35e]

Also known as: World Timer, Crown

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

15.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

150m

Dial Color

Cream

Jewels

26j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1981

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