XX.Y Dynamic 40 is a versatile audio device that offers a range of features for enjoying music and listening to the radio.

With its built-in MP3 player, you can insert a Micro SD/SDHC card (not included) and play your favorite tracks. The device also has an FM radio tuner, so you can listen to your favorite stations without having to connect to the internet.

Additionally, the XX.Y Dynamic 40 can be used as a speaker, allowing you to share your music with others. It also has an equalizer function, with various presets to customize your listening experience. The device can be connected to external devices via a mini jack cable.