Features: ¡¾2.4G Wireless Microphone System¡¿ 2.4G wireless transmission, strong anti-interference, stable signal transmission and clear sound quality. Built-in DSP digital chip for intelligent noise reduction. With 3.5mm headphone jack for real time monitoring. ¡¾Auto Pairing & Long Distance Transmission¡¿ Transmitter and receiver support quick automatic pairing after power on, and max. transmission range is up to 50M in open area. It is recommended to use within 15M to ensure clear sound reception. ¡¾Omni-directional Microphone¡¿ The transmitter has built-in microphone that supports 360° omnidirectional pickup to record more clear sound. Also supports external microphone(not included) connection for different usage scene. ¡¾Built-in Rechargeable Battery¡¿ Both transmitter and receiver have built-in 350mAh rechargeable lithium batteries that can work about 8 hours after being fully charged. Users can charge transmitter and receiver at the same time via the included charging cable.