Seiko Cal. 5284 - 631

This Automatic model from 1976 features a 34mm PVD Black case. Powered by the 5284 caliber with 24j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-7dabb689694c]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

34mm

Case Thickness

8.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Burgundy

Jewels

24j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1976

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