Seiko Cal. 7136 - 303

This Spring Drive model from 1967 features a 41mm Stainless Steel case. It features a Champagne dial protected by a Acrylic crystal and offers 170m of water resistance. [seikata-wm-003c8af438e3]

Also known as: Monster, Helmet

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Champagne

Jewels

26j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1967

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