CES 2020 - The headband is designed to be used for 20 minutes a day, three days a week. It has two electrodes that detect brain activity. Wearers can view their brain feedback in real-time, via the Android/iOS app. There are a bunch of different exercises, including growing leaves on trees and drawing patterns. The idea is to essentially train your brain to sleep better.
https://techcrunch.com/2020/01/05/this-brain-training-wearable-promises-better-sleep/
origin - https://www.pipiscrew.com/?p=16495 this-brain-training-wearable-promises-better-sleep