dual 5.25 inch Portable Bluetooth Speaker with battery

* Bluetooth/USB/TF/FM/AUX with Karaoke (wireless microphone optional)

* 30W Hi-Fi classic D amplifier system （15W optional）

* Bluetooth 5.0 version

* Master volume/Treble/Bass/Mic. Volume/Echo control

* USB support MP3/WMA audio format

* FM PLL digital tuner

* 4 digit LED display (red)

* Digital ECHO for Karaoke

* LED lighting

* Built-in Li-ION 18650 11.1V 1800mAh battery( Built-in Li-ION 18650 3.7V 3600mAh battery )