Seiko Cal. 5636 - 621

This Solar model from 1971 features a 37mm PVD Black case. With its 18mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-41132c6aa73b]

Also known as: Helmet, Rally

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

200m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1971

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