Seiko Cal. 4543 - 681

The Seiko 4543-681 represents an important milestone in Seiko's 1971 lineup. With its 18mm lug width and 15.2mm profile, it sits comfortably on most wrists. [seikata-wm-c22a858d559b]

Also known as: Bellmatic, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

15.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

White

Jewels

25j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1971

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