Features: The sound card has 15 sound effects, 9 interesting modes and 6 rotary adjustment buttons. With BT function, two live streams and a follow-up after connecting three phones. When the sound comes in, it\'s the indicator light. When you don\'t sing, it\'s the light that breathes. A button to eliminate the original sound and smart dodge. Intelligent DSP chip noise reduction, low consumption, stereo sound. Built-in rechargeable polymer lithium battery, long life.