Seiko Cal. 4546 - 931

This Automatic model from 1979 features a 37mm PVD Black case. Powered by the 4546 caliber with 28j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-651a5e3bb3cf]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1979

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