Seiko Cal. 6635 - 424

This Spring Drive model from 1973 features a 45mm Titanium case. Powered by the 6635 caliber with 30j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-a2644326609c]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

14.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

Black

Jewels

30j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1973

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