Seiko Cal. 6636 - 623

This Spring Drive model from 1972 features a 42mm PVD Black case. It features a Cream dial protected by a Sapphire crystal and offers 200m of water resistance. [seikata-wm-76e5dfa84ea3]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

200m

Dial Color

Cream

Jewels

17j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1972

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