Seiko Cal. 4531 - 223

This Hand-Winding model from 1993 features a 35mm Two-Tone case. It features a Black dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-e7bd70d91f6b]

Also known as: Monster, World Timer

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

35mm

Case Thickness

10.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

150m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1993

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