Seiko Cal. 6617 - 755

This Spring Drive model from 1976 features a 34mm Titanium case. It features a Navy dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-922946d38302]

Also known as: Helmet, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

34mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Navy

Jewels

23j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1976

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