Seiko Cal. 6637 - 913

This Solar model from 1974 features a 40mm PVD Black case. It features a Navy dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-af245045ddb0]

Also known as: Monster

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

40mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

150m

Dial Color

Navy

Jewels

23j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1974

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