Features: 4 special functions (noise reduction, original singing, dodging, internal playback); 8 sound modes; 16 popular special effect ambient sounds; 12 electronic tones, 4magic inflections. Independent control knobs for treble-, midrange, bass, monitoring, accompaniment, and recording. Separate knob control for microphone sound and reverb-. OTG digital signal connection, no loss of stereo-sound quality; Specifications: Material:ABS OTG Lossless Transmission Volt:48V Size:Approx 21x13.8x2.5cm/8.3x5.3x0.98in Bluetooth-compatible Protocol:5.0 Note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1xLive Sound Card 1x Charging Cable 1xAudio Cable