Seiko Cal. 4487 - 391

Seiko 4487-391

This Quartz model from 1969 features a 35mm Hardlex-Coated Steel case. Powered by the 4487 caliber with 32j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-163fd28392f5]

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
11.2mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
130m
Dial Color
Navy
Jewels
32j
Frequency
28,800 bph
Power Reserve
63 hours
Year
1969

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