TWS interconnection for 360° surround stereo sound effect, creating a home theater-level KTV. DSP Processor - Digital Signal Processing technology - rich sound with heavy bass. Dual-mode dual-chip control, dual-channel simultaneous output of Bluetooth music and microphone sound. Built-in smart sound chip and independent sound card, you can eliminate the original singing with one key and become a singer in seconds. Support live broadcast and internal recording, singing / broadcast / recording / listening - all in one speaker.