Seiko Cal. 4531 - 633

The Seiko 4531-633 represents an important milestone in Seiko's 1980 lineup. With its 20mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-28f376f9781b]

Also known as: Arnie

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

36mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Silver

Jewels

35j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1980

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