Seiko Cal. 4566 - 155

The 4566-155 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4566 caliber with 27j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-11e9451df743]

Also known as: Monster, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

8.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Champagne

Jewels

27j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1981

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