Seiko Cal. 4487 - 319

Seiko 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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