Seiko Cal. 4540 - 722

Released in 1980, the Cal. 4540 with design code 722 was part of Seiko's domestic market collection. With its 18mm lug width and 8.8mm profile, it sits comfortably on most wrists. [seikata-wm-eeaac902eb7c]

Also known as: Monster, Emperor

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1980

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