Seiko Cal. 6637 - 673

This Solar model from 1968 features a 41mm Titanium case. With its 21mm lug width and 14.6mm profile, it sits comfortably on most wrists. [seikata-wm-ba67b1f9f500]

Also known as: Tuna, World Timer

Specifications

Movement

Solar

Case Material

Titanium

Case Width

41mm

Case Thickness

14.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Burgundy

Jewels

23j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1968

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