Seiko Cal. 5643 - 616

This Spring Drive model from 1982 features a 38mm Hardlex-Coated Steel case. Powered by the 5643 caliber with 21j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-1c77930d447f]

Also known as: Silverwave, World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

9.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Burgundy

Jewels

21j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1982

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