Seiko Cal. 4450 - 581

This Hand-Winding model from 1972 features a 40mm PVD Black case. It features a Silver dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-29db7e113e99]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Silver

Jewels

27j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1972

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