The Bulova Accutron had a number of novel aspects that made them appealing to the public. Because they were powered by a tuning fork, they hummed rather than ticked and were the first to have sweeping seconds hands. "Spaceview" versions showed the highly distinctive and unusual tuning fork mechanism inside. But of course, being able to claim to be the most accurate wristwatch available, was a huge marketing advantage for them. By 1970 however, the writing was on the wall for the Accutron. Bulova did attempt to cling on a bit longer with the development of the "Accuquartz" model which combined tuning fork technology with quartz control.