1. This wireless audio transmission system consists of a transmitter ARC2 Transmitter and a receiver ARC2 Receiver consists of two devices, using U-band frequency, suitable for dynamic meter wind. 2. One send multiple receive, multiple send multiple receive built-in 7 channels, supporting 7 sets to be used simultaneously. And this product also supports the use of one transmitter in conjunction with multiple receivers. 3. Anti interference, stable, long-distance wireless transmission of audio signals without any compression processing, with excellent anti-interference ability and obstacle penetration ability, can restore signals with high quality, greatly avoiding signal distortion and attenuation Long-lasting battery life. 4. Equipped with an 800mA high-capacity lithium battery, it can be used continuously for more than 5.5 hours, whether it is for stage performances or not Whether it's regular practice or not, it's easy to handle. Type: Microphone Receiver Transmitter Application: Microphone Color: Black Material: plastic Package Contents: 1 x Microphone Transmitter 1 x Microphone Receiver 1 x USB Cable 1 x English instruction manual 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.