Seiko Cal. 5634 - 744

This Spring Drive model from 1975 features a 41mm PVD Black case. Powered by the 5634 caliber with 33j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-ef1145207c67]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Cream

Jewels

33j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1975

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