Seiko Cal. 4531 - 401

The Seiko 4531-401 represents an important milestone in Seiko's 1965 lineup. With its 20mm lug width and 9.5mm profile, it sits comfortably on most wrists. [seikata-wm-15555a32a51a]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

9.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Burgundy

Jewels

29j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1965

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