Seiko Cal. 4557 - 737

This Hand-Winding model from 1967 features a 43mm PVD Black case. It features a Black dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-448b7e0fa06d]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

43mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

60m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1967

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