Seiko Cal. 5284 - 491

This Quartz model from 1986 features a 34mm PVD Black case. Powered by the 5284 caliber with 21j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-77e6383c7569]

Also known as: Monster, Sportsmatic

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

34mm

Case Thickness

9.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Silver

Jewels

21j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1986

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