Seiko Cal. 5638 - 285

This Spring Drive model from 1990 features a 45mm Titanium case. The Coin-Edge bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-05d6b2c5a9f0]

Also known as: Bullhead, Arnie

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Champagne

Jewels

24j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1990

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