Seiko Cal. 4461 - 630

This Spring Drive model from 1974 features a 40mm Titanium case. Powered by the 4461 caliber with 33j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-c3cc09feccfa]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1974

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