Seiko Cal. 6391 - 950

Seiko 6391-950

The 6391-950 is a sought-after Spring Drive piece from Seiko's golden era. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-7bd209e70c1c]

Also known as: Bullhead, Arnie

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
37mm
Case Thickness
11.7mm
Lug Width
21mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
160m
Dial Color
Navy
Jewels
22j
Frequency
21,600 bph
Power Reserve
60 hours
Year
1993

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