Seiko Cal. 6659 - 684

This Spring Drive model from 1976 features a 38mm Titanium case. It features a Silver dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-af081659e24a]

Also known as: Monster, Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Silver

Jewels

26j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1976

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