Seiko Cal. 4423 - 123

This Spring Drive model from 1968 features a 40mm Two-Tone case. It features a White dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-f81fe5acd560]

Also known as: Sumo, Arnie

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

80m

Dial Color

White

Jewels

34j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1968

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