Equipped with BT/FM/USB/TF card/MIC, DC-5V charging (Type-c), USB with 5V boost, no remote control+lithium battery protection, microphone holder with external installation+single power amplifier, potentiometer volume, and box to box function +With +illusions, both +illusions are controlled by MODE (short press to switch to illusions mode, long press to switch functions) Functional parameters: Speaker specification: 6.5 inches x 2 Power: 20W(P.M.P.O: 2000W) Battery 18650/3.7V/2400MAH machine size: 222 x 199 x 481mm Material: plastic colour: Black Package Contents: 1 x Outdoor Bluetooth Speaker 1 x Mic 1 x USB Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.