Seiko Cal. 4423 - 765

The Seiko 4423-765 represents an important milestone in Seiko's 1978 lineup. It features a Navy dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-d941f8a6b3e0]

Also known as: World Timer, Sea Horse

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

36mm

Case Thickness

13.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Navy

Jewels

28j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1978

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