Seiko Cal. 4598 - 637

The Seiko 4598-637 represents an important milestone in Seiko's 1991 lineup. It features a Navy dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-394da88e048f]

Also known as: World Timer, Arnie

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

45mm

Case Thickness

11.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

Navy

Jewels

20j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1991

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