Seiko Cal. 3815 - 154

This Spring Drive model from 1975 features a 41mm Gold-Plated case. The Inner Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-4c8e7887c905]

Also known as: Silverwave

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

White

Jewels

35j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1975

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