Seiko Cal. 4557 - 722

The Seiko 4557-722 represents an important milestone in Seiko's 1966 lineup. It features a Green dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-04ec34db97ae]

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

46mm

Case Thickness

15.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

100m

Dial Color

Green

Jewels

24j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1966

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