National Geographic : 1964 Jun
All the parts that make a watch fast or slow have been left out of the Accutron movement. Old-fashioned balance wheel is still used in all wind, self-wind, and electric watches. It is not used in the Accutron movement. Accutrn tuning fork ever given. The balance wheel, springs, staff and screws in your present watch are mechanical parts. A speck of dust can upset them. So can con gealed oil. And normal wear. We do not use these parts in the Accutron movement. Instead, a tiny tuning fork keeps time through vibrations, Sjjio j dividing every second into 360 equal parts. (Your present watch divides a second only into 5 parts.) Accutron time is so precise that we guaran tee average daily accuracy within 2 seconds.* And we know owners who have not gained or lost this in 2 months. You might also like to know that the U.S. uses Accutron movements in satellites. And that the Air Force has issued them to all X-15 pilots. However, don't let this make you think that Accutron prices are higher than any other fine timepiece's. _(Remember, we left a lot of parts out.) SBulova Watch Company,Inc. . TheAccutron movement was developedbyBUlova. Spaceviewmodel, with transparent dial to show movement, $125 plus tax. Other styles available * Your Accutron jeweler will adjust accuracy to this tolerance, if necessary. Guarantee is for one full year.