Seiko Cal. 4423 - 904

The Seiko 4423-904 represents an important milestone in Seiko's 1968 lineup. Powered by the 4423 caliber with 21j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-170b8236904c]

Also known as: Bullhead, Silverwave

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

10.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Navy

Jewels

21j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1968

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