Bluetooth Battery Monitor is a widget-only application that provides you with an estimated battery level of your Bluetooth headset (or another device) and calculates how much time is left of its battery life.

The application is compatible with all Bluetooth devices, that support the A2DP or Headset profile. It is not compatible with Bluetooth devices that do not support this profile.

The application uses the Android battery api to get the battery level of the device and the time left until the battery is discharged.

The values can be obtained from the device's user manual, its specifications, or you can use the widget to count the active time.

If you like the application, you can consider buying the PRO version. It is not required to download the application and the widget, it is required to buy the PRO version. The PRO version has no ads and no in-app purchases. It does not require Internet access and it does not require the Android platform.