Seiko Cal. 6388 - 331

Seiko 6388-331

The Seiko 6388-331 represents an important milestone in Seiko's 1971 lineup. The Inner Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-feda18873ccb]

Also known as: Bullhead, Helmet

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
35mm
Case Thickness
10.3mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
60m
Dial Color
Blue Sunburst
Jewels
27j
Frequency
36,000 bph
Power Reserve
67 hours
Year
1971

Related Models

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