Seiko Cal. 5634 - 990

This Spring Drive model from 1974 features a 41mm PVD Black case. Powered by the 5634 caliber with 34j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-55445e2ebb1c]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

10.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

80m

Dial Color

White

Jewels

34j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1974

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