Seiko Cal. 0720 - 631

This Spring Drive model from 1974 features a 36mm Gold-Plated case. With its 19mm lug width and 8.3mm profile, it sits comfortably on most wrists. [seikata-wm-d1af21c7a7cd]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

8.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

Silver

Jewels

34j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1974

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