Seiko Cal. 5640 - 770

Seiko 5640-770

This Spring Drive model from 1983 features a 46mm Stainless Steel case. The Fixed bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-14be49b92b2a]

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
46mm
Case Thickness
14.4mm
Lug Width
21mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
40m
Dial Color
Green
Jewels
21j
Frequency
21,600 bph
Power Reserve
44 hours
Year
1983

Related Models

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