JBL Charge 3 with Dayton Drivers Retrofit : r/diysound
2pcs 2 Inch Full Range Speaker 4 Ohm 10w Bluetooth-compatible Speaker 53mm Speaker For Jbl Charge 3 Multimedia Magnetic Speakers - Speakers - AliExpress
JBL Charge 4 - Portable Bluetooth Speaker with built-in powerbank
9 best Bluetooth speakers: Best portable speakers to shop this year