Seiko Cal. 6640 - 355

Seiko 6640-355

This Hand-Winding model from 1993 features a 46mm Hardlex-Coated Steel case. The Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-015de8943c70]

Also known as: Sea Horse

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
12.4mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
160m
Dial Color
Black
Jewels
32j
Frequency
36,000 bph
Power Reserve
67 hours
Year
1993

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seikata-wm-015de8943c70