Seiko Cal. 6663 - 254

This Spring Drive model from 1979 features a 35mm Titanium case. The Coin-Edge bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-fdcb19358a22]

Also known as: Helmet, Navigator

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Champagne

Jewels

36j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1979

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