Seiko Cal. 4423 - 621

This Spring Drive model from 1987 features a 42mm Gold-Plated case. It features a Navy dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-fb46f9b72e2e]

Also known as: Sumo, Arnie

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

8.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Navy

Jewels

24j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1987

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