SleepPhones Simple is our personal sleep sound system with 17 pre-loaded audio tracks that feature binaural beat technology and other relaxing tracks for a deep, restorative sleep. Surround yourself in an ultimate sound experience – without disturbing, or being disturbed by, the person next to you. Please note these are not Bluetooth headphones. You may not change the pre-loaded tracks or listen to external music. Benefits Sleep sounds pre-programmed for maximum convenience, right out of the box No external music player required Fall asleep faster, stay asleep better, and wake up refreshed Reduce ambient noise, conversations, traffic sounds, and snoring No painful ear buds or awkward headphones Get a good night's sleep naturally, without medications Relieve stress and block out noise by listening to deeply relaxing tracks Features 17 pre-loaded tracks that include scientifically-designed binaural beat technology sleep sounds and more to help you fall asleep 6 timer options available, including the option to repeat your favorite track Rechargeable Battery Life: Up to 20 hours Charging Time: 3 hours USB charger included with purchase Superior sound quality with eco-friendly, lead-free electronics Headband made from our proprietary SheepCloudfabric Removable speakers in a hypoallergenic, machine washable fabric headband Pre-shrunk and non-pilling material One-year limited warranty and 30-day return policy Fabric Options ﻿﻿Both options are made from our proprietary SheepCloudfabric Fleece headband: Super soft, luxurious, and warm. Ideal for sleeping, relaxing, meditating, and everyday use. (95% polyester, 5% spandex) Breeze headband: Breathable and moisture-wicking. Ideal for running and exercising. Preferred by hot sleepers and those who live in warm climates. (95% polyester, 5% spandex)