Seiko Cal. 6643 - 370

Seiko 6643-370

This Kinetic model from 1971 features a 38mm Stainless Steel case. With its 18mm lug width and 8.6mm profile, it sits comfortably on most wrists. [seikata-wm-227cba75c9d8]

Also known as: Turtle

Specifications

Movement
Kinetic
Case Material
Stainless Steel
Case Width
38mm
Case Thickness
8.6mm
Lug Width
18mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
50m
Dial Color
Black
Jewels
33j
Frequency
36,000 bph
Power Reserve
43 hours
Year
1971

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seikata-wm-227cba75c9d8