Seiko Cal. 4566 - 401

The Seiko 4566-401 represents an important milestone in Seiko's 1988 lineup. Powered by the 4566 caliber with 24j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-d1b29b64927f]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

30m

Dial Color

Green

Jewels

24j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1988

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