Seiko Cal. 4490 - 721

Seiko 4490-721

The 4490-721 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4490 caliber with 29j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-078a3e58242e]

Also known as: Monster

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
14.8mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
110m
Dial Color
White
Jewels
29j
Frequency
28,800 bph
Power Reserve
65 hours
Year
1975

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seikata-wm-078a3e58242e