Seiko Cal. 4420 - 641

Seiko 4420-641

The 4420-641 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4420 caliber with 35j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-6739a4663d0d]

Also known as: Rally, Sea Horse

Specifications

Movement
Kinetic
Case Material
Titanium
Case Width
36mm
Case Thickness
10.8mm
Lug Width
21mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
200m
Dial Color
Cream
Jewels
35j
Frequency
28,800 bph
Power Reserve
52 hours
Year
1974

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