Long Service Time
Winonly Bluetooth Sleep headband is 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
Winonly Sleep Headphones doubles as a sport 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
Winonly upgraded the design to offer 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 then ¼ thick, making them a comfortable option regardless of sleeper position or ear shape, also an ideal choice for side sleeper.

Bluetooth technical parameters:

Bluetooth version: 5.0

Bluetooth transmission distance: 10M

Music playing time: Maximum sound 7h, medium volume 10 hours

Microphone distance: 1m

Bluetooth standby time: 72h

Battery capacity: 150mA / h

Battery power: 0.55w

Horn impedance: 32 ohm

Horn power: 0.02w

Frequency range: 2.4-2.4835ghz

Sensitivity: 45dB

Audio output distortion: 0.6%

Audio output SNR: 93dB

Charging time: 1-2 hours

Maximum input voltage: DC 5V

Maximum input current: 150mah

Maximum input power: 0.55w