The app "Bluetooth Music" you can listen to music and audio files on all audio Bluetooth devices, even those that usually do not allow this, as those who work only during calls. If your headset has A2DP, you will be able to listen to music in good quality. You can also use it for hearing AIDS and some car radios. Using the app "Bluetooth Music" you can quickly see the battery level of the headset. The function of "Voice acting" will tell You the remaining battery charge of the Bluetooth device.