Seiko Cal. 6643 - 938

Seiko 6643-938

This Automatic model from 1975 features a 41mm Hardlex-Coated Steel case. With its 18mm lug width and 14.9mm profile, it sits comfortably on most wrists. [seikata-wm-e135ecba8d03]

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
41mm
Case Thickness
14.9mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
100m
Dial Color
Black
Jewels
29j
Frequency
21,600 bph
Power Reserve
58 hours
Year
1975

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seikata-wm-e135ecba8d03