AcousticSheep SleepPhones Wireless | Bluetooth Headphones for Sleep, Travel & More | Flat Speakers | Rechargeable Battery Lasts Up to 10 Hours | Sunset Pink - Breeze Fabric (Size M) HELPS WITH INSOMNIA, RELAXATION, MEDITATION, TRAVEL, TINNITUS, AND MORE. Everyone from shift workers, people who share a bed with a snorer, tinnitus sufferers, athletes, and many more have benefited from getting a better nights sleep by using these innovative sleep headphones that are the original & most comfortable bed-friendly headphones on the market. WIRELESS BLUETOOTH CONNECTIVITY & LONG LASTING BATTERY. The headband headphone has Bluetooth technology to wirelessly connect with compatible devices so you never have to worry about getting tangled up in cords. Wireless range of 15-30 feet (5-10 meters) for easy connectivity. Rechargeable battery lasts up to 10 hours and easily pairs/syncs with smartphones, computers, and most other Bluetooth compatible devices. Battery charging time of 3 hours with included USB charger. NATURAL SLEEP AID CREATED BY A DOCTOR. Invented by a family physician to help patients fall asleep faster and stay asleep longer naturally & without drugs. SleepPhones come with a limited 1 year manufacturer's warranty and a satisfaction guarantee. ENGINEERED & DESIGNED FOR COMFORT. The ultra-thin flat headphone speakers are comfortable enough to wear while lying down or sleeping on your side. They block out ambient noise without using earplugs that are painful & fall out. Built-in volume and play/pause controls. Ultra-low power, safe RF emissions. CHOOSE YOUR SIZE & COLOR. Sizes XS, M, XL. Size Medium, M is the most common size that fits most. This model is available in two types of fabric for optimum comfort: a soft FLEECE fabric & a moisture-wicking BREEZE fabric.