Seiko Cal. 4423 - 726

The Seiko 4423-726 represents an important milestone in Seiko's 1978 lineup. It features a Black dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-65f417a30985]

Also known as: Sea Horse

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

44mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

150m

Dial Color

Black

Jewels

19j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1978

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