Seiko Cal. 6642 - 770

Seiko 6642-770

This Spring Drive model from 1977 features a 35mm Hardlex-Coated Steel case. The Fixed bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-e41c191d05c3]

Also known as: Silverwave

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
8.9mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
140m
Dial Color
Cream
Jewels
23j
Frequency
21,600 bph
Power Reserve
46 hours
Year
1977

Related Models

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