Seiko Cal. 6691 - 816

Released in 1974, the Cal. 6691 with design code 816 was part of Seiko's domestic market collection. With its 21mm lug width and 10.7mm profile, it sits comfortably on most wrists. [seikata-wm-142cf637ee48]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

10.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

29j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1974

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