Seiko Cal. 5667 - 631

This Hand-Winding model from 1978 features a 39mm Titanium case. It features a Navy dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-ae56a34a0db6]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

24j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1978

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