Seiko Cal. 4598 - 640

The Seiko 4598-640 represents an important milestone in Seiko's 1969 lineup. With its 22mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-54ed5a7a30d9]

Also known as: World Timer

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Green

Jewels

18j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1969

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