Seiko Cal. 6683 - 991

This Solar model from 1970 features a 36mm PVD Black case. With its 20mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-283ae2ef04a3]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

36mm

Case Thickness

11.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

170m

Dial Color

Green

Jewels

36j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1970

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