Seiko Cal. 5638 - 421

This Spring Drive model from 1998 features a 39mm Titanium case. The Coin-Edge bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-48ca6ad124c7]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Silver

Jewels

34j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1998

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