Seiko Cal. 3851 - 131

This Spring Drive model from 1975 features a 43mm Gold-Plated case. Powered by the 3851 caliber with 24j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-fd3ba7a43bfc]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

14.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Cream

Jewels

24j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1975

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