Seiko Cal. 4420 - 873

Seiko 4420-873

The 4420-873 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4420 caliber with 21j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-948dcd732c5a]

Also known as: Rally, Bellmatic

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
38mm
Case Thickness
8.0mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
40m
Dial Color
Blue Sunburst
Jewels
21j
Frequency
28,800 bph
Power Reserve
56 hours
Year
1991

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