Seiko Cal. 6640 - 614

Seiko 6640-614

This Hand-Winding model from 1976 features a 40mm Gold-Plated case. Powered by the 6640 caliber with 33j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-50ab4ce56438]

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
40mm
Case Thickness
9.0mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
110m
Dial Color
Burgundy
Jewels
33j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1976

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seikata-wm-50ab4ce56438