Seiko Cal. 7186 - 972

This Spring Drive model from 1976 features a 43mm Hardlex-Coated Steel case. It features a Black dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-600618432c5c]

Also known as: Helmet, World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Black

Jewels

17j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1976

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