Seiko Cal. 4423 - 217

This Spring Drive model from 1968 features a 35mm Hardlex-Coated Steel case. Powered by the 4423 caliber with 20j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-fa480cf1c2ab]

Also known as: Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

11.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

White

Jewels

20j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1968

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