HIFI Stereo Earphones Bluetooth Headphone Music Headset FM and Support SD Card with Mic for Mobile Xiaomi Iphone Sumsamg Tablet1.How to charge this headset?Connect your computer and headphone with the USB cable.2.How to start the headset and listen the music on the computer?Please be sure your computer have a bluetooth function and turn on the bluetooth, then press headphone’s ON/OFF key and you will see the blue light blinking and get ready to pair, search and pair until connected. Use your computer to start music and enjoy it with the headset.3. How to operate the bluetooth headphone with mobile phone?a.Turn on bluetooth on mobile phone,press headphone’s ON/OFF key and you will see the blue light blinking and get ready to pair, search and pair until connected. b. If someone call you, you just need press the Hang up/Pause button, and you can chat with your friend on the phone. Finished your talking, you just need press the Hang up/Pause button, and you can continue your music.4.How to use the FM function?Just press the MEQ button on the headset it will change to FM mode, press the "PAUSE" button to scan radio automatically, and short press "Volume " and "Volume-" to choose scanned radio. 5.How to use the MP3 function?Just insert the TF card into the slot, music will play directly.(we don't provide TF card)1 Item will be shipped in 1-2 working days upon receipt of payment, 2 Free shipping :we usually delivery by China post airmail,it will takes 10-25 working days. 3 By express(EMS/DHL/FEDEX/UPS etc.):usuallly it will take 3-7 working days window.adminAccountId=201423919;