Seiko Cal. 4423 - 913

This Spring Drive model from 1972 features a 35mm Two-Tone case. It features a Navy dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-44054eb469bb]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

36j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1972

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