Seiko Cal. 4550 - 940

The Seiko 4550-940 represents an important milestone in Seiko's 1970 lineup. With its 22mm lug width and 14.6mm profile, it sits comfortably on most wrists. [seikata-wm-31946e79b506]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Burgundy

Jewels

32j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1970

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