Seiko Cal. 6657 - 921

Seiko 6657-921

This Spring Drive model from 1973 features a 35mm Titanium case. The Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-7ebd67809a9d]

Also known as: Samurai, Monster

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
35mm
Case Thickness
8.4mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
120m
Dial Color
Blue Sunburst
Jewels
26j
Frequency
28,800 bph
Power Reserve
69 hours
Year
1973

Related Models

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