Seiko Cal. 4566 - 238

The Seiko 4566-238 represents an important milestone in Seiko's 1975 lineup. The Bidirectional bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-ebbd0e8d0989]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

34mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1975

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