Seiko Cal. 4487 - 319

This Spring Drive model from 1989 features a 45mm Hardlex-Coated Steel case. Powered by the 4487 caliber with 28j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-652b60bc61ff]

Also known as: Monster, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

200m

Dial Color

White

Jewels

28j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1989

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