Wirele Bluetooth Earphone Headband Sleeping Headphone Stereo Earphone Sports Headset Thin Soft Music Hat Eye Mask Side Sleep Bullet Points: 1,3-in-1 Sleep Headphones: Multifunctional Bluetooth head-mounted sleep headphones. 2,Super soft and Breathable Headband: The headband is made of strong woven thread and provided with a breathable mesh lining, which can be easily stretched to fit all head sizes. 3,Bluetooth 5.0: 0.25 inches speaker comes with high-definition HIFI excellent sound quality, and it is very comfortable for sleepers. 4,Wide Application: The earphone is very suitable for use in gym, exercise, running, yoga and other outdoor activities. 5,Longer Playing Time: Charging for about 2-2.5 hours can provide more than 10 hours of playing time. Bluetooth headband brings you a good night sleeping. Specification: Bluetooth version: 5.0 Bluetooth transmiion distance: 10 meters Headphone channel: stereo (2.0) Music playback time: maximum sound 7H, medium volume 10 hours Microphone distance: 1 meter Bluetooth standby time: 72H Battery capacity: 150ma/h Battery power: 0.55W Speaker impedance: 32 ohms Speaker power: 0.02W Frequency range: 2.4-2.4835GHz Sensitivity: 45db Transmitting power: 6dB Audio output distortion: 0.6% Audio output signal-to-noise ratio: 93dB Charging time: 1-2 hours Maximum input voltage: DC 5V Maximum input current: 150mah Maximum input power: 0.55W Size: about 27cm*10cm/10.63*3.94inch Packing List: 1*Bluetooth Headset 1*Charging Cable 1*Instruction Notice: Due to the long