【High-Performance Audio】: Crystal-clear stereo sound with robust bass So you can fully enjoy the music and bring you the perfect audio enjoyment. 【Perfect Stereo Sound & Noise Reduction Design】: Ergonomic and ultra-lightweight in-ear designed with solid sound-insulating material, reduces external noise while minimizing the sound leakage, giving you clear sound. 【Switch Freely】: The headphone cable comes with a Built-in microphone and a controller. Single multifunctional button allows you answer/end call, play/pause, skip and replay songs by the earphones. No need to take out your phone. Built-in mic gives you hands-free calling. 【Easy to use】：2019 new pop-up headphones, you need to first open Bluet000th on your phone, then insert the headset into the iPhone, a pop-up window will appear in a few seconds, you need to click "Connect with iCloud". (The second or later insertion of the phone will automatically connect) 【Enjoy The Service】: 12 month after-sales service. If you have any question, please feel free to contact us. You will get satisfactory solution from our service team.