Seiko Cal. 4550 - 555

This Hand-Winding model from 1980 features a 41mm Titanium case. It features a Champagne dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-4165786841d7]

Also known as: Monster, Helmet

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

8.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Champagne

Jewels

22j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1980

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