Seiko Cal. 5687 - 398

This Solar model from 1972 features a 45mm Titanium case. With its 18mm lug width and 8.9mm profile, it sits comfortably on most wrists. [seikata-wm-6bd52732ea70]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Titanium

Case Width

45mm

Case Thickness

8.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

200m

Dial Color

Green

Jewels

34j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1972

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