The remote control can be controlled by remote control to realize the volume control of the switch. Interface 3.7-5V DC power supply to automatically , 33W+3W stereo power amplifier, support Bluetooth, support power-off memory, U disk to . The outer box is made of 6 pieces of 3mm high-transparency plastic spliced together. Exquisite and beautiful, the brown protective film needs to be removed splicing. The delivery is a complete spare parts, which needs to be welded and assembled, with a complete installation instructions. Support bluetooth, support power-off memory, U disk , can be powered by power bank. Colour: as shown Material: plastic Package Contents: 1 set * Bluetooth speaker kit Only the above package content, other products are not included. Note: Light 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.