Seiko Cal. 5630 - 638

The Seiko 5630-638 represents an important milestone in Seiko's 1980 lineup. It features a Black dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-374d4e90a3c7]

Also known as: Pogue

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

12.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Black

Jewels

19j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1980

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