Seiko Cal. 4421 - 974

The 4421-974 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4421 caliber with 23j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-d443b177746b]

Also known as: Tuna, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

11.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

190m

Dial Color

Green

Jewels

23j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1969

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