Seiko Cal. 4550 - 409

The Seiko 4550-409 represents an important milestone in Seiko's 1976 lineup. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-93f0f72b8552]

Also known as: Silverwave

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Green

Jewels

23j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1976

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