1、Support Functions: Professional multifunction 4 channel mixing console, built in amplifier, support BT and usb connection, headset monitoring, recording functions. 2、With Microphones: High fidelity microphones provide excellent performance. Each microphone is powered by two AA battery (not included). Turn the bottom to install batteries 3、BT Mode and USB Interface: Turn on BT mode and play music on your smartphone. Equipped with a USB interface, supporting USB and MP3 music playback. 4、Adjustment and Control: 16 kinds of reverberation adjustment, a simple ToggleKeys dsp sound effect. Low, medium, high 3 band equalizer control. It also supports different types of volume control. 5、Connecting Mic: Connect the microphone using a 6.5mm audio jack and a balanced xlr jack, with a built in 48v phantom power supply directly suitable for capacitive microphones. ​Item Type: Sound Console Product Material: Metal Weight: Approx. 3400g / 7.5lb Single Microphone Battery Type: Two AA Battery Are Required (Shipped Without Batteries) 1 x Mixing Console 1 x Manual 1 x Adapter 1 x Plug Cable 2 x Antenna 2 x Microphone