Seiko Cal. 4550 - 603

This Hand-Winding model from 1970 features a 34mm PVD Black case. It features a Green dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-38ad6dad8510]

Also known as: Monster, Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

34mm

Case Thickness

10.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

140m

Dial Color

Green

Jewels

26j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1970

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