The live sound card contains 16 live effects, 12 electronic music effects, 4 sound field effects, 3 voice change. Digital display, one-key dodge, volume adjustable. It supports two phones live and one phone BT accompaniment meanwhile. Features: 16 live effects, 12 electronic music effects, 4 sound field effects, 3 voice change. Digital display knob operation status real-time, power display and low power reminder. Support two phones live and one phone BT accompaniment meanwhile. One-key dodge control, can adjust volume of microphone and monitor. Compatible with multiple sofware systems, USB connection no driver for computer. Specialized condenser microphone port, suitable for 6.5mm coil microphone and instruments. Specifications: Material: Metal Color: Black BT Protocol: 2.1 Input Voltage: 5V Channel: 2.1 Battery Capacity: 1000mAh Item Size: 133 * 66 * 11.5mm / 5.24 * 2.6 * 0.45in Package Weight: 502.4g / 17.72ounces Package Size: 225 * 140 * 55mm / 8.86 * 5.51 * 2.17in Packing List: 1 * Live Sound Card 1 * USB Cable 2 * Audio Cables 1 * User Manual