Seiko Cal. 4487 - 310

Seiko 4487-310

The Seiko 4487-310 represents an important milestone in Seiko's 1991 lineup. Powered by the 4487 caliber with 26j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-e0ebd6406379]

Also known as: Shogun, Arnie

Specifications

Movement
Solar
Case Material
PVD Black
Case Width
41mm
Case Thickness
10.0mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
100m
Dial Color
Green
Jewels
26j
Frequency
28,800 bph
Power Reserve
40 hours
Year
1991

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