Seiko Cal. 4424 - 256

Released in 1971, the Cal. 4424 with design code 256 was part of Seiko's domestic market collection. Powered by the 4424 caliber with 21j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-af35da0a12ab]

Also known as: Navigator, Flighty

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

14.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

White

Jewels

21j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1971

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