Seiko Cal. 5633 - 137

This Spring Drive model from 1981 features a 38mm Titanium case. Powered by the 5633 caliber with 34j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-9c5981b59ec4]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

14.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1981

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