JBL Charge 4 - Waterproof Portable Bluetooth Speaker - Black : Electronics - Amazon.com
jbl charge 4) the speaker doesn't make any sound not even the little on/off chime. i tried connecting via aux and it still didn't work. also, the battery life indicator is on
Can I connect Shure SM58 mic to JBL Charge 4 using a Mackie Mix5 setup or Art Pro TubeMP + Focusrite Audio interface? - Quora
JBL Charge 4 - Portable Bluetooth Speaker with built-in powerbank