Seiko Cal. 5660 - 661

Seiko 5660-661

This Spring Drive model from 1991 features a 35mm Gold-Plated case. Powered by the 5660 caliber with 27j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-54c9ad6c3ff2]

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
35mm
Case Thickness
10.6mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
170m
Dial Color
Navy
Jewels
27j
Frequency
21,600 bph
Power Reserve
51 hours
Year
1991

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seikata-wm-54c9ad6c3ff2