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.