Seiko Cal. 6391 - 567

Seiko 6391-567

The 6391-567 is a sought-after Automatic piece from Seiko's golden era. With its 20mm lug width and 8.2mm profile, it sits comfortably on most wrists. [seikata-wm-7c27681e68ba]

Also known as: Helmet

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
8.2mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
180m
Dial Color
Cream
Jewels
31j
Frequency
36,000 bph
Power Reserve
37 hours
Year
1970

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