Seiko Cal. 4539 - 777

The Seiko 4539-777 represents an important milestone in Seiko's 1969 lineup. With its 18mm lug width and 10.8mm profile, it sits comfortably on most wrists. [seikata-wm-0fa8637f1d0f]

Also known as: Bullhead, Emperor

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

34mm

Case Thickness

10.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

White

Jewels

20j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1969

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