<b>★Our promise to you!★ </b><br><br> All quanqiangtong products are built to the highest quality standards,focuses on creating the best headphone experience. and we stand behind our products with 30 day money back guarantee and a full 1 year manufacturer's warranty.<br><br> <b>Earbuds,Microphone Earphones Stereo Headphones NoiseIsolating Headset Fit Compatible with Xs/XR/XS Max (1Pack) </b><br><br> <b>HOW TO USE： </b><br><br> Step 1:Click the setting,turn on the Bluetooth<br> Step 2:Plug into the Phone(A window pops up)<br> Step 3:Click the "Connect"<br><br> <b>●How to use Smart Button in-line Control:</b><br><br> ❶ Press middle multifunction button: Answer/end phone calls<br> ❷ Long Press middle button : Reject phone calls<br> ❸ Press Once middle button : Play/pause music<br> ❹ Press Twice: Next track<br> ❺ Press Three: Previous track<br><br> <b>Connect Devices：</b><br><br> Fourcase headphones can work seamlessly with your phone 7,8, tablets, Bluetooth-enabled music players and any device with Bluetooth connection. Never miss important calls or messages.<br><br> <b>NOTE:</b><br><br> ➣This headphones own bluetooth function, turn on the Bluetooth before using.<br> ➣This Bluetooth function will be connected automatically when you using at next time or in the future.