Seiko Cal. 3870 - 421

This Quartz model from 1970 features a 45mm PVD Black case. It features a Silver dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-804613cff5f0]

Also known as: Helmet, Sea Horse

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

45mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Silver

Jewels

20j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1970

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