CURE-alpha is a MP3 player that emits alpha waves to relax the brain.
Alpha waves are said to have positive impact on the brain and are supposed to relax and rejuvenate.
The alpha waves are transmitted via very low frequency through the small player while listening to MP3 or WMA music files.
More details on ITMedia (Japanese). First seen on AkihabaraNews.
We reported in 2004 about a Brain Wave machine that also works with alpha waves.