Seiko Cal. 6366 - 591

This Quartz model from 1969 features a 37mm Hardlex-Coated Steel case. With its 19mm lug width and 8.1mm profile, it sits comfortably on most wrists. [seikata-wm-a301570cefe2]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

8.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Black

Jewels

33j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1969

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