The Cefaly headband, which sends small electrical currents through your head to help relieve and/or prevent migrane headaches, has won approval from the U.S. Food and Drug Administration.
The device, which looks rather like a set of Oakley M-Frame eyewear without the lenses, is available by prescription for $295.
[youtube https://www.youtube.com/watch?v=0Rh3btp7Rxw]