Seiko Cal. 6660 - 689

This Solar model from 1978 features a 37mm Titanium case. With its 18mm lug width and 10.5mm profile, it sits comfortably on most wrists. [seikata-wm-9fdd5b7f2da9]

Also known as: Rally

Specifications

Movement

Solar

Case Material

Titanium

Case Width

37mm

Case Thickness

10.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Green

Jewels

27j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1978

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