Strong compatibility: Compatible with effects, speaker input, sound card input, mixing console input, etc. Strong battery life: More than 8 hours of battery life without any battery anxiety. Auto pairing: After booting up, it automatically completes pairing and can be plugged in for use. 2.4G Receiver: Plug into the Mic jack of the device or Audio input jack, as for Speaker, Audio Console. 2.4G Transmission: Bringing you a comfortable experience with every song you sing, as for XLR Output Device, Wire Microphone. Color: Black Material: Plastic+Metal Package Contents: 1 * transmitter 1 * receiver 1 * USB cable 1 * adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.