Seiko Cal. 3898 - 420

This Spring Drive model from 1981 features a 34mm PVD Black case. It features a Navy dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-97ba0d2709e9]

Also known as: Sportsmatic, Bellmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1981

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