Seiko Cal. 5686 - 257

This Spring Drive model from 1971 features a 42mm Gold-Plated case. The Bidirectional bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-1cacb55dd081]

Also known as: Helmet, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

8.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Black

Jewels

30j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1971

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