Seiko Cal. 0721 - 728

This Quartz model from 1977 features a 43mm Stainless Steel case. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-022a6efb5daa]

Also known as: Sumo, Silverwave

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Burgundy

Jewels

28j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1977

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