Seiko Cal. 6643 - 107

This Solar model from 1971 features a 42mm Titanium case. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-668d17bf7edd]

Also known as: Helmet, Arnie

Specifications

Movement

Solar

Case Material

Titanium

Case Width

42mm

Case Thickness

10.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Cream

Jewels

19j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1971

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