Seiko Cal. 5631 - 180

This Automatic model from 1991 features a 43mm Titanium case. It features a White dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-10644438786b]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

43mm

Case Thickness

15.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

White

Jewels

21j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1991

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