Seiko Cal. 5643 - 631

The Seiko 5643-631 represents an important milestone in Seiko's 1997 lineup. It features a Silver dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-f2b915426141]

Also known as: Arnie

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

34mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Silver

Jewels

26j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1997

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