Seiko Cal. 3871 - 983

This Spring Drive model from 1977 features a 43mm PVD Black case. It features a Navy dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-7abc784e6ad6]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

90m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1977

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