Portable speaker with shoulder strap 2x6.5" 30W LED light Bluetooth/USB/SD card Characteristics Model: KSC-1001 Bluetooth Version: 5.0 Chip: Zhongke Lanxun Battery capacity: 3600mAh Charging time: about 4 hours Speaker: 6.5 inch full frequency speaker; Power: 15W*2 Inputs: Bluetooth, TF card, USB drive, AUX, FM and other modes Equipped with dual karaoke microphones and remote control Power input: microUSB DC 5V Speaker power button LED light switch button Buttons for controlling audio effects With shoulder strap  Accessories included 2 wireless microphones Remote control 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 Effect adjustment knobs