Bluetooth sports headphones features: -Bluetooth 5. 0 technology that produce great sound quality, Bluetooth can pair your iPhone x, iPhone 8 or any other smart-phones iPad tablets easily. -Farther transmission -more stable connection -longer battery life -better sound quality how to connect to Bluetooth? 1. Close all your Bluetooth in the phone or tablet first. 2. Press and hold the “on/off” button for about 5 seconds until the red/blue Light flashes. 3. Open your Bluetooth and find the Bluetooth name bt-faah, then connect. 4. Then you can enjoy music! Notice: Please disconnect the first paired device, then pair the second device. how to Wash it? ---Washable fabric & removable speakers step 1: push right speaker to the place of Bluetooth Control step 2: push left speaker to the place of Bluetooth Control step 3: push 2 speakers and Bluetooth Control to the place of fabric liner which is separated from stitching. tips: 1. Do not attempt to power on or connect the Bluetooth while charging. Get the Battery fully charged first then disconnect from charger before connecting the Bluetooth. 2. Don't use sleep headphones eye mask while it's charging. 3. Please check USB cable if can't work to charge. 4. Please adjust the volume from your mobile or long press Vol+ from Bluetooth if you can't hear any music. 5. The sound may have a bit noise if there's environmental interference. 6. Both speakers are not fixed, it can be adjusted according to your size.