First of all welcome to Steemhunt @anttn, this is a great hunt, it is already in top 10, but maybe you'd better explain some more features of it, but I checked its features and it is really very useful, it is a great way to improve sleep quality. (You should use link in English, and you used link in French, its link should be : https://dreem.com/en/product)
RE: Dreem Band - A headband to make deep sleep even more effective