Seiko Cal. 5638 - 528

This Spring Drive model from 1975 features a 44mm Stainless Steel case. It features a Navy dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-eefefdb9d61b]

Also known as: Shogun, Bullhead

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Navy

Jewels

26j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1975

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