Seiko Cal. 7173 - 140

This Spring Drive model from 1972 features a 37mm Stainless Steel case. It features a Green dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-3d48ee874400]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Green

Jewels

21j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1972

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