Seiko Cal. 5690 - 916

This Spring Drive model from 1978 features a 34mm Hardlex-Coated Steel case. The Inner Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-dadbc6f9f76b]

Also known as: Bullhead, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

10.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Green

Jewels

27j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1978

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