Seiko Cal. 7181 - 900

This Spring Drive model from 1966 features a 36mm Gold-Plated case. With its 20mm lug width and 9.4mm profile, it sits comfortably on most wrists. [seikata-wm-58d54c7d91e5]

Also known as: Helmet, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

80m

Dial Color

Cream

Jewels

35j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1966

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