I demoed these next-level sleep earbuds at CES 2026, and they go beyond great audio by Investor News Today January 11, 2026 0 Nina Raemont/ZDNETZDNET's key takeaways NextSense earbuds monitor mind exercise utilizing EEG.The sleep earbuds declare to make use of EEG for restorative sleep. They price $399 and can be found to preorder.Mind-tracking expertise ...