Portable rechargeable speaker 2x8" 30W LED light Bluetooth TWS/SD/USB Characteristics Model: KK-8201 Black colour Bluetooth Version: BT5.0 Chip: Zhongke Lanxun Battery capacity: 3600mAh Charge for approximately 2.5 hours Dual power amplifier Woofer Size: 8 inch * 2 Power: 30W Audio inputs: Bluetooth/USB/SD Card/AUX Power input: microUSB DC 5V   Accessories included Remote control Wired microphone Audio inputs USB port SD card input AUX 3.5mm AUX 6.35mm for microphone Bluetooth Audio controls Knob for general volume Knob for echo effect Microphone volume control knob