Seiko Cal. 4423 - 393

This Quartz model from 1980 features a 43mm PVD Black case. It features a Green dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-ad46a3f9ed53]

Also known as: Tuna, World Timer

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

43mm

Case Thickness

12.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Green

Jewels

34j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1980

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