Seiko Cal. 0721 - 464

This Quartz model from 1988 features a 37mm Stainless Steel case. Powered by the 0721 caliber with 19j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-b7c425f2898d]

Also known as: Helmet, Silverwave

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

13.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

190m

Dial Color

Green

Jewels

19j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1988

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