Seiko Cal. 6634 - 351

This Spring Drive model from 1977 features a 40mm Titanium case. With its 19mm lug width and 9.1mm profile, it sits comfortably on most wrists. [seikata-wm-e69618a2d064]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

9.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1977

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