Seiko Cal. 6391 - 761

Seiko 6391-761

This Spring Drive model from 1979 features a 37mm Titanium case. With its 21mm lug width and 14.0mm profile, it sits comfortably on most wrists. [seikata-wm-8a7d3730e52e]

Also known as: Monster, Bullhead

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
37mm
Case Thickness
14.0mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
160m
Dial Color
Burgundy
Jewels
20j
Frequency
36,000 bph
Power Reserve
54 hours
Year
1979

Related Models

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