The portable speaker was designed to work alone

The portable speaker was designed to work alone, but also in conjunction with the suitcase. It slides in the front of the suitcase folding the legs of the speaker, which also deactivates the manipulation of digital sound…. As for the Speakase suitcase, it is comparable to what you would expect from most high-end rigid suitcases on the market."

"The speaker component has a built-in power charger that can be accessed from the front of the suitcase, and since it is easily removable, there should be no problems with compliance with the TSA." Full review here