Seiko Cal. 4566 - 321

The Seiko 4566-321 represents an important milestone in Seiko's 1978 lineup. Powered by the 4566 caliber with 32j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-fa1487703364]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

14.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Green

Jewels

32j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1978

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