Seiko Cal. 6686 - 691

This Solar model from 1988 features a 37mm Titanium case. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-e146f8b16773]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Titanium

Case Width

37mm

Case Thickness

15.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1988

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