Seiko Cal. 6691 - 995

The 6691-995 is a sought-after Spring Drive piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-cd476602d49f]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

13.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1982

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