Seiko Cal. 4597 - 631

The Seiko 4597-631 represents an important milestone in Seiko's 1971 lineup. With its 22mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-2ec84fc9a13e]

Also known as: Silverwave

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

15.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1971

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