Seiko Cal. 4557 - 820

Released in 1981, the Cal. 4557 with design code 820 was part of Seiko's domestic market collection. It features a Black dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-700be30580ac]

Also known as: Sea Horse, Crown

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

38mm

Case Thickness

12.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

40m

Dial Color

Black

Jewels

32j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1981

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