Seiko Cal. 5638 - 845

The Seiko 5638-845 represents an important milestone in Seiko's 1977 lineup. It features a Black dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-ac524ee78dfd]

Also known as: Flighty

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

200m

Dial Color

Black

Jewels

26j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1977

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