Seiko Cal. 5691 - 138

The 5691-138 is a sought-after Spring Drive piece from Seiko's golden era. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-529e84b77de3]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

8.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

White

Jewels

24j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1979

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