A company called Rythm unveiled its Dreem device that takes a new approach to provide users with a good night’s sleep. The product detects when user is in a deep sleep state and then uses sound to maintain that state.

Made out of a lightweight silicone polymer, Dreem comes in the form of an adjustable headband that incorporates a series of sensors that act like a portable EEG (electroencephalogram). When a sleeper enters deep sleep, the device will emit a sound against the skull, which reportedly prolongs that state. Dreem doesn’t require earplugs and its proprietary machine-learning algorithm will reportedly improve the process over time. So compared to other, plain trackers – Dreem will actually do something to help users rest during the night. It, however, won’t help you fall asleep.

The companion app, which at the moment is an iPhone exclusive title, is a data-tracking tool that doubles as a smart alarm clock that will wake users at the optimal sleep stage. It works even without a connected headset, but to get really good rest, you’re better off pairing it with Dreem.

It remains to be seen how Dreem will compete with other “pure” sleep trackers, but Rythm obviously thinks its product is better as it’s asking $349 for the device that will start shipping later this year.