Seiko Cal. 6391 - 763

Seiko 6391-763

This Spring Drive model from 1976 features a 37mm Two-Tone case. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-e683a59e15bf]

Also known as: Monster, Goldfeather

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
37mm
Case Thickness
13.0mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
190m
Dial Color
White
Jewels
25j
Frequency
36,000 bph
Power Reserve
56 hours
Year
1976

Related Models

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