Seiko Cal. 4557 - 637

The Seiko 4557-637 represents an important milestone in Seiko's 1975 lineup. It features a Green dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-6fd09a995a14]

Also known as: Arnie

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

38mm

Case Thickness

14.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Green

Jewels

27j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1975

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