Features:1. The turban is made of high-quality polyester fabric, which has good elasticity and excellent breathability. washable. Please remove the device module before thoroughly cleaning the headband.2. The device module is located in the middle of the speaker and will not oppress the ears. The ultra-thin flat earphone speaker is comfortable to wear when lying down or sleeping on the side. They can block ambient noise without the need for earplugs that can cause pain and fall.3. The wireless headband can be paired with any smart phone or tablet device with Bluetooth function more quickly and easily.4. Sleep headset and sports headband in one: The sports headband allows you to listen to music without wearing additional headphones, and protects you from messy hair and sweat.5. Very suitable for gym, exercise, running, yoga and other outdoor activities. Notice:1.Actual color may be slightly different from the image due to different monitor and light effect2.Please allow 1-3cm deviation due to manual measurement Headscarf material: polyesterChannel: bilateral stereoSize: 27cm*10*2cmBluetooth technical parameters:Bluetooth version: 5.0Bluetooth transmission distance: 1015 metersHeadphone channel: stereo 2.0Music playback time: maximum sound 7H, medium volume 10 hoursMicrophone distance: 1 meterBluetooth standby time: 72HBattery capacity: 150ma/hBattery power: 0.55WSpeaker impedance: 32 ohmsSpeaker power: 0.02WFrequency range: 2.4-2.4835GHzSensitivity: 45dbTransmitting power: 6dBAudio output distortion: 0.6Audio output signal-to-noise ratio: 93dBCharging time: 1-2 hoursMaximum input voltage: DC 5VMaximum input current: 150mahMaximum input power: 0.55WPackage List:1 x Sleep Headphone1 x Manual1 x Charging Cable