Seiko Cal. 4441 - 183

This Hand-Winding model from 1973 features a 37mm PVD Black case. It features a Cream dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-9fdecaa948d6]

Also known as: Bullhead, Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

Cream

Jewels

35j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1973

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