Seiko Cal. 5686 - 664

This Automatic model from 1970 features a 41mm Two-Tone case. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-248fa142489b]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

12.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1970

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