Long Service Time - Bluetooth Sleep headband is a built-in rechargeable Li-Ion battery, up to 10 hours playing time, 2-2.5 hours' charging time, lasting a whole night.
Stylish Sports Headband Style - Sleep Headphones doubles as a sports headband, so you can go from sleep right to the gym or a trail run without changing gear. It is very lightweight, suitable to travel, and good for running, Yoga, and other athletic activities
Incredibly Soft and Hypoallergenic Mater - The upgraded design offers a breathable mesh lining and a more durable braided cord, keeping your head not only dry and cool but making sure it does an excellent job of being a sports headband and stopping sweat.
Extremely Thin on-ear Design Speaker - These soft foam-covered headphones are less than ¼ thick, making them a comfortable option regardless of sleeper position or ear shape, also an ideal choice for side-sleepers.
Bluetooth technical parameters:
Bluetooth version: 5.0
Bluetooth transmission distance: 10M
Music playing time: Maximum sound 7h, medium volume 10 hours