Seiko Cal. 5637 - 312

This Spring Drive model from 1967 features a 41mm Titanium case. Powered by the 5637 caliber with 33j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-0e454b29703b]

Also known as: Bullhead, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

8.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

180m

Dial Color

Champagne

Jewels

33j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1967

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