1、MULTIPLE INPUT METHODS: Sound interface bundle supports Bluetooth input, accompaniment input, memory card input, OTG input, so you can easily cope with live, singing, listening to songs and other scenarios, free to switch. 2、STEREO SURROUND: Podcast equipment bundle has HIFI sound quality, easily cover the full range of high, medium and low, sound stereo surround, you can use your home as a KTV sound card speaker. 3、HIGH CAPACITY BATTERY: Karaoke mixer bundle has a 4000mAh power battery and 2 microphones each with a built in 1800mAh high capacity battery, long lasting battery life, to meet your live singing at any time. 4、LIVE WHILE CHARGING: Sound card bundle supports live streaming while charging. After plugging in the sound card, you can separately charge the sound card and the phone at the same time to achieve the demand of long time live streaming. 5、DIGITAL CHIP: Sound mixer bundle adopts digital DSP processing chip, which can realize independent adjustment of high, medium and low bass, reverb, accompaniment, recording, etc. Smart compatible with 99% live streaming software, compatible for IOS, for Android, for Windows system.