Seiko Cal. 4487 - 171

Seiko 4487-171

The Seiko 4487-171 represents an important milestone in Seiko's 1973 lineup. Powered by the 4487 caliber with 24j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-d6573a9fa2e2]

Also known as: UFO, Arnie

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
40mm
Case Thickness
12.0mm
Lug Width
19mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
160m
Dial Color
Cream
Jewels
24j
Frequency
28,800 bph
Power Reserve
71 hours
Year
1973

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