Seiko Cal. 5644 - 231

This Quartz model from 1990 features a 38mm Titanium case. The Inner Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-bfe81d71fd5a]

Also known as: Turtle

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

38mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1990

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