Seiko Cal. 5657 - 766

Seiko 5657-766

This Hand-Winding model from 1979 features a 40mm Hardlex-Coated Steel case. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-de703f8b5f70]

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
10.0mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
70m
Dial Color
Navy
Jewels
17j
Frequency
21,600 bph
Power Reserve
40 hours
Year
1979

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seikata-wm-de703f8b5f70