Seiko Cal. 6643 - 350

Seiko 6643-350

This Automatic model from 1970 features a 44mm Titanium case. With its 21mm lug width and 11.0mm profile, it sits comfortably on most wrists. [seikata-wm-1b2d6a54b2bb]

Also known as: Helmet, Emperor

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
44mm
Case Thickness
11.0mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
150m
Dial Color
Silver
Jewels
17j
Frequency
36,000 bph
Power Reserve
65 hours
Year
1970

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