Seiko Cal. 6631 - 940

Seiko 6631-940

This Hand-Winding model from 1976 features a 44mm Hardlex-Coated Steel case. The Fixed bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-ae0d43e3af0a]

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
10.8mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
190m
Dial Color
Green
Jewels
34j
Frequency
21,600 bph
Power Reserve
52 hours
Year
1976

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