Seiko Cal. 6640 - 765

Seiko 6640-765

This Kinetic model from 1977 features a 43mm Hardlex-Coated Steel case. With its 18mm lug width and 13.0mm profile, it sits comfortably on most wrists. [seikata-wm-060c42eb5a27]

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
13.0mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
200m
Dial Color
Green
Jewels
33j
Frequency
21,600 bph
Power Reserve
39 hours
Year
1977

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seikata-wm-060c42eb5a27