Seiko Cal. 5638 - 939

The Seiko 5638-939 represents an important milestone in Seiko's 1979 lineup. It features a Green dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-3c4d9f020bf1]

Also known as: Pogue, Golden Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

37mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1979

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