Seiko Cal. 6391 - 537

Seiko 6391-537

This Spring Drive model from 1990 features a 39mm Hardlex-Coated Steel case. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-4d14941bc4d9]

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
39mm
Case Thickness
15.2mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
100m
Dial Color
Blue Sunburst
Jewels
20j
Frequency
21,600 bph
Power Reserve
67 hours
Year
1990

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seikata-wm-4d14941bc4d9