Seiko Cal. 4588 - 631

The Seiko 4588-631 represents an important milestone in Seiko's 1977 lineup. It features a Green dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-cc705ce3a4f1]

Also known as: Sportsmatic, Arnie

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

44mm

Case Thickness

13.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

130m

Dial Color

Green

Jewels

35j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1977

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