Seiko Cal. 6638 - 513

This Quartz model from 1974 features a 38mm PVD Black case. It features a Cream dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-f92d9ec77dc7]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

38mm

Case Thickness

9.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Cream

Jewels

29j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1974

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