Seiko Cal. 6691 - 699

This Spring Drive model from 1970 features a 44mm Stainless Steel case. Powered by the 6691 caliber with 31j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-37fbc220b0d5]

Also known as: Sea Horse, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

12.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

White

Jewels

31j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1970

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