Seiko Cal. 6338 - 420

This Quartz model from 1978 features a 37mm PVD Black case. With its 20mm lug width and 12.7mm profile, it sits comfortably on most wrists. [seikata-wm-a45d59fe0748]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

37mm

Case Thickness

12.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1978

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