Sound system HP33-CD from Inovalley with built-in radio. Belongs to the category of 1 sound systems, meaning that besides the playback unit it also has 1 speakers with built-in woofer. You can enjoy the music you have stored on an external hard drive or USB stick, thanks to the USB port it has. Specifically, the audio system has the ability to play files in the format MP3. It has Bluetooth to connect devices that have the same technology, such as a mobile phone. The built-in CD player gives you the ability to play the corresponding physical discs.