Seiko Cal. 4557 - 978

The Seiko 4557-978 represents an important milestone in Seiko's 1984 lineup. Powered by the 4557 caliber with 22j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-4752e0cee5a8]

Also known as: Crown

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

43mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

110m

Dial Color

Cream

Jewels

22j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1984

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