Seiko Cal. 6681 - 660

This Solar model from 1980 features a 40mm Hardlex-Coated Steel case. With its 21mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-2cd881eeabc6]

Also known as: Helmet, Rally

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

15.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Burgundy

Jewels

17j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1980

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