Seiko Cal. 6638 - 890

This Quartz model from 1977 features a 41mm PVD Black case. It features a Green dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-29207e6d3475]

Also known as: Pogue, Goldfeather

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

41mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1977

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