Seiko Cal. 4539 - 736

The Seiko 4539-736 represents an important milestone in Seiko's 1981 lineup. With its 21mm lug width and 15.6mm profile, it sits comfortably on most wrists. [seikata-wm-26fc8eaa08cd]

Also known as: Emperor

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1981

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