Support 3D stereo surround sound, 5 voice change modes, professional sound effects tuning, press EFF to switch sound effects, make singing more attractive, support reverb/treble/bass 7db loudness adjustment, 32-level microphone and instrument volume adjustment, Fine crafted speaker unit, super bass surround sound. Built-in DSP professional digital audio processing chip, AI bel canto algorithm, intelligently prevent howling, restore the KTV experience, and make singing easier. Dual wireless microphones allow you to sing together with your family and friends. Built-in 7.4V/3000mAh polymer battery pack, long battery life, smart standby. Support input from AUX, TF card, USB flash drive or wireless playback via Bluetooth, compatible with various APPs. The high power of 100W makes singing like a small concert, even in a noisy outdoor environment, it can make the sound not distorted or broken. Smart compatible mobile phones, tablets, notebooks and other mainstream multimedia devices with Bluetooth function, easy to connect Suitable for family, party, travel, etc.