Seiko Cal. 6643 - 196

This Spring Drive model from 1969 features a 42mm Titanium case. With its 21mm lug width and 10.0mm profile, it sits comfortably on most wrists. [seikata-wm-dea75d723431]

Also known as: Rally, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Green

Jewels

26j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1969

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