Seiko Cal. 5657 - 727

Seiko 5657-727

This Solar model from 1966 features a 44mm Hardlex-Coated Steel case. Powered by the 5657 caliber with 32j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-cdbefbb6d08f]

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
12.5mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
100m
Dial Color
Blue Sunburst
Jewels
32j
Frequency
28,800 bph
Power Reserve
40 hours
Year
1966

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