Seiko Cal. 4421 - 812

This Automatic model from 1973 features a 37mm Gold-Plated case. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-ca910beb0cb9]

Also known as: Sumo, Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Cream

Jewels

29j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1973

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