Seiko Cal. 5631 - 742

This Quartz model from 1977 features a 41mm Titanium case. It features a Cream dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-f0892ca3e937]

Also known as: Bellmatic

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

41mm

Case Thickness

12.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Cream

Jewels

21j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1977

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