Seiko Cal. 4487 - 661

Seiko 4487-661

This Spring Drive model from 1969 features a 41mm Gold-Plated case. Powered by the 4487 caliber with 17j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-f680addc1359]

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
41mm
Case Thickness
13.9mm
Lug Width
22mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
140m
Dial Color
Green
Jewels
17j
Frequency
28,800 bph
Power Reserve
59 hours
Year
1969

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seikata-wm-f680addc1359