Seiko Cal. 6691 - 556

This Spring Drive model from 1974 features a 40mm Titanium case. With its 21mm lug width and 12.5mm profile, it sits comfortably on most wrists. [seikata-wm-4ed68e68103e]

Also known as: Pogue, Goldfeather

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Burgundy

Jewels

33j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1974

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