Seiko Cal. 6636 - 242

This Automatic model from 1979 features a 37mm PVD Black case. With its 20mm lug width and 10.5mm profile, it sits comfortably on most wrists. [seikata-wm-cdd14adb289a]

Also known as: Samurai

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1979

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