Seiko Cal. 6664 - 650

This Spring Drive model from 1983 features a 36mm Hardlex-Coated Steel case. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-a86352730458]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Champagne

Jewels

18j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1983

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