Seiko Cal. 5631 - 359

This Spring Drive model from 1986 features a 37mm Stainless Steel case. Powered by the 5631 caliber with 19j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-82c0c960fca4]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

19j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1986

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