Seiko Cal. 4490 - 634

Seiko 4490-634

This Hand-Winding model from 1975 features a 41mm Hardlex-Coated Steel case. Powered by the 4490 caliber with 23j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-9e5d32e6521b]

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
41mm
Case Thickness
8.1mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
120m
Dial Color
Cream
Jewels
23j
Frequency
21,600 bph
Power Reserve
50 hours
Year
1975

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seikata-wm-9e5d32e6521b