Seiko Cal. 6664 - 568

This Spring Drive model from 1965 features a 36mm Titanium case. Powered by the 6664 caliber with 19j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-8ae2a9bf2026]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

13.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1965

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