Description 1,3-in-1 Headphones: Multifunctional Bluetooth-compatible head-mounted 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-compatible 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-compatible headband brings you a good night sleeping. Specification: Bluetooth-compatible version: 5.0 Bluetooth-compatible transmission distance: 10 meters Headphone channel: stereo (2.0) Music playback time: maximum sound 7H, medium volume 10 hours Microphone distance: 1 meter Bluetooth-compatible 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-compatible Headset Note: 1. Due to different display screens and lighting effects, the actual color of the item may be slightly different from the color shown on the picture. 2. Due to manual measurement, please allow small deviations.