Seiko Cal. 3871 - 825

This Spring Drive model from 1979 features a 39mm Two-Tone case. The Fixed bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-2bf740705a95]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

11.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

80m

Dial Color

Champagne

Jewels

35j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1979

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