Seiko Cal. 4457 - 230

This Hand-Winding model from 1967 features a 43mm PVD Black case. It features a Green dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-134b276e3307]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

43mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

80m

Dial Color

Green

Jewels

18j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1967

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