Bluetooth Audio Widget: Connect & Volume Widget is a free music player that can play music on your Android device without having to go to the settings menu. The app is compatible with most Bluetooth audio devices such as headsets, speakers, and hearing devices. You can even use the app to listen to music on your Android phone or tablet if your device supports hands-free profile (HFP) or Bluetooth Low Energy (BLE).

How to Use the App:

Just install the app and open it. You will be able to see the battery level of your headset or device in the widget.