Seiko Cal. 4431 - 218

This Automatic model from 1986 features a 41mm PVD Black case. It features a Navy dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-eb809adbba73]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

12.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1986

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