Seiko Cal. 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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