Seiko Cal. 5637 - 436

This Automatic model from 1992 features a 41mm Titanium case. Powered by the 5637 caliber with 25j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-6e161d16b024]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

41mm

Case Thickness

10.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Champagne

Jewels

25j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1992

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