Seiko Cal. 6374 - 636

This Spring Drive model from 1967 features a 35mm PVD Black case. With its 18mm lug width and 15.0mm profile, it sits comfortably on most wrists. [seikata-wm-ed0391786eb3]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

15.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Navy

Jewels

25j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1967

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