Seiko Cal. 5691 - 727

This Spring Drive model from 1971 features a 39mm Two-Tone case. With its 21mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-627033d9379a]

Also known as: Shogun, UFO

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1971

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