To use the mini radio boombox bing by backpack

Mini Boombox is small enough to fit with a backpack. Or luggage comfortable. The built-in battery can be used for up to 10 hours per charge. It also works as a speakerphone for mobile devices with wireless Bluetooth connectivity. The built-in Mini Boombox may have a microphone. In addition to using a wireless connection to a mobile device. It also has a 3.5mm input jack if you want to connect it with a regular MP3 player.