A headband that detects deep sleep via ECG, emitting sounds that hopefully cause positive effects. Cites studies I haven't looked at. No pricing yet; still in pre-production and testing. Might be something to give a go if it is cheap enough, or if it becomes popular and cheap clones appear on the market, or are desperate.

Thanks. We're EEG, not ECG. We only show a few studies on the website, however there is over a decade of research in slow-wave enhancement, which is what our stimulation protocol is based upon.