For me, 5 stars is well deserved.

Hi alumdria841, the interfaces are as follows: INPUTS AND OUTPUTS: stereo mini-jack (INPUT), USB-A, optical digital input, microphone input and guitar / microphone input. For more information on compatibility, please contact the manufacturer of the system. Sony Europe

Hi rportner, The speaker has a built-in lithium-ion battery. Do not attempt to change the battery yourself. If you need help with this in the future, please contact us directly. Sony Europe