Seiko Cal. 5620 - 720

This Automatic model from 1982 features a 34mm Stainless Steel case. Powered by the 5620 caliber with 21j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-f7dbbcfdf529]

Also known as: Helmet, Silverwave

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1982

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