NoteIt is recommended to use it for more than 30 days It records all sleeping activities, monitors the amount of times that you snore, assesses the intensity and records the data for analysis that helps you better understand your condition and track improvements over timeHow It Works - By using Snore Earset patented anti-snoring algorithm, the new Snore Earset accurately detects snoring and intervenes by emitting gentle micro vibrations (36 levels ranging from weak to strong). The brain responds by driving the muscles of the throat to contract and open the airway. This allows you to breathe smoothly, stop snoring, and therefore sleep better.Easy to Use - The magnetic USB charging cable can provide enough battery power for two nights' use on a single charge (please use a 5V/1A charger). Weighing just 11.3g, the Snore Earset is portable and easy to use, so you can sleep peacefully at work, home, or while traveling.Guarantee & Warranty - This product is covered under a one-year warranty and no-reason return and exchange guarantee within 30 days after receipt. Feel free to contact us with any questions.