Portable rechargeable trolley speaker 15" 40W Bluetooth/SD/USB LED light Characteristics Model: KK-15101 Versione Bluetooth: BT5.0 Black colour Product dimensions: 609x331x421mm Chip: Zhongke Lanxun Battery capacity: 3600mAh Speaker unit: 15 inch dual voice coil Power 40W Audio inputs: Bluetooth TWS, TF card, USB, AUX and other modes Charging time: about 3.5 hours Dual amplifier + treble Switches for turning on the case and turning on the LED lights Power input: DC 9V 1.5A Practical handle and wheels to facilitate transport as if it were a trolley Accessories included Wireless microphone Remote control  Audio controls Knobs for general volume and microphone Effetti audio: Treble / Bass / Echo / Delay Entrances Jack audio da 3.5mm 6.35mm audio jack for microphones SD card input USB input