Seiko Cal. 4557 - 447

The 4557-447 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4557 caliber with 21j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-c2f6daf5d61b]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

43mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

50m

Dial Color

Burgundy

Jewels

21j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1973

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