Seiko Cal. 5637 - 422

The Seiko 5637-422 represents an important milestone in Seiko's 1968 lineup. It features a Black dial protected by a Mineral crystal and offers 200m of water resistance. [seikata-wm-268055084b23]

Also known as: Crown

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

200m

Dial Color

Black

Jewels

31j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1968

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