Seiko Cal. 4538 - 577

The Seiko 4538-577 represents an important milestone in Seiko's 1967 lineup. The Inner Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-15e4fc795650]

Also known as: Monster, UFO

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

44mm

Case Thickness

13.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Champagne

Jewels

34j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1967

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