You can listen to the music and answer phone. It supports listening to music and answering calls. One-to-two connection can connect 2 mobile phones at the same time Intelligent compatibility: support all mobile phones with Bluetooth capabilities, tablet, notebook, singing bar, Q music, movies, etc Showing call number, dial last call, all smart Chinese and English audio prompts, boot, pairing, shutdown, disconnecting the phone, low battery will give voice prompts Whenever is connected to the mobile phone and the phone is power off, it will automatically connect back to the mobile phone when is turned on, which is more convenient i9S. If you want both earbuds Bluetooth pairing with your phone at the same time, please follow these steps: 1) Turn on the Bluetooth of your smart phone. 2) Turn on both earbuds together, and double-click the button of one earbud. 3) Pairing with the Bluetooth, then both earbuds could be Paired at the same time. Features: 1. listening to the song correct, support songs and call, 2. remind call number, the last call back, all intelligent Chinese and English voice prompts, boot, pair, shut down the phone power will be low voice prompts; 3. Power capacity will show on your I phone, you can see the power situation anytime, do not worry about the electricity ,make your life without worry; 4. One to two connections, can be connected to two mobile phones at the same time 5. Bluetooth headset connected to the phone after the shutdown , and then open the Bluetooth headset will connect back to the phone automatically , more convenient; 6. Intelligent compatibility: support all Bluetooth mobile phone, tablet, notebook, singing it,movies, etc.