Seiko Cal. 5631 - 420

The Seiko 5631-420 represents an important milestone in Seiko's 1999 lineup. It features a Silver dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-ae603133914d]

Also known as: World Timer

Specifications

Movement

Solar

Case Material

Titanium

Case Width

37mm

Case Thickness

12.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Silver

Jewels

28j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1999

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