Seiko Cal. 4550 - 397

The Seiko 4550-397 represents an important milestone in Seiko's 1988 lineup. The Bidirectional bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-0d0ab9aa85d7]

Also known as: Monster, UFO

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

46mm

Case Thickness

13.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Navy

Jewels

34j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1988

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