Seiko Cal. 7156 - 709

This Spring Drive model from 1974 features a 40mm Stainless Steel case. It features a Green dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-08246c416f8f]

Also known as: Monster, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

15.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Green

Jewels

22j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1974

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