Seiko Cal. 4540 - 685

The Seiko 4540-685 represents an important milestone in Seiko's 1979 lineup. With its 20mm lug width and 11.2mm profile, it sits comfortably on most wrists. [seikata-wm-d1cec7fb703b]

Also known as: Helmet, Emperor

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

43mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

50m

Dial Color

White

Jewels

19j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1979

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