Seiko Cal. 6664 - 640

This Solar model from 1967 features a 35mm PVD Black case. With its 18mm lug width and 10.6mm profile, it sits comfortably on most wrists. [seikata-wm-6947a8350802]

Also known as: Monster, Crown

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

35mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1967

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