With the DENVER BTS-52 you can easily play your favorite music from your Bluetooth-enabled device, a USB stick or a micro SD memory card. Via the AUX-IN input you can enjoy music with the Denver without Bluetooth connection. Simply connect the AUX-IN to the headphone output of your smartphone or MP3 player. New other (see details): A new, unused item with absolutely no signs of wear. The item may be missing the original packaging, or in the original packaging but not sealed. The item may be a factory second or a new, unused item with no defects.