Seiko Cal. 5690 - 786

This Spring Drive model from 1971 features a 40mm Two-Tone case. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-4ef2a44f7401]

Also known as: Sumo, Pogue

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

15.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

40m

Dial Color

Green

Jewels

22j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1971

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