Seiko Cal. 6640 - 967

Seiko 6640-967

This Spring Drive model from 1992 features a 42mm Gold-Plated case. Powered by the 6640 caliber with 25j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-01ee31c8620c]

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
42mm
Case Thickness
15.5mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
40m
Dial Color
Burgundy
Jewels
25j
Frequency
28,800 bph
Power Reserve
61 hours
Year
1992

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seikata-wm-01ee31c8620c