Seiko Cal. 4550 - 612

The Seiko 4550-612 represents an important milestone in Seiko's 1973 lineup. With its 22mm lug width and 11.6mm profile, it sits comfortably on most wrists. [seikata-wm-009aeec01352]

Also known as: Sumo, Emperor

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

40mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

160m

Dial Color

Cream

Jewels

25j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1973

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