I saw the future of sleep earbuds at CES - and you can preorder them today

ZDNET reviews NextSense Smartbuds, $399 EEG-enabled earbuds that use three dry electrodes per bud to monitor brain activity and enhance deep sleep via pink-noise slow wave stimulation, aiming to deliver more restorative rest without additional time in bed. The earbuds also target daytime use for potential focus insights, offer 7–10 hours of battery life, and are available for preorder with expected shipping in February; while inspired by medical EEG, the device is for consumer applications rather than clinical diagnostics.