J6 Outdoor Live Streaming Noise Reduction Wireless 2.4G Lavalier Microphone,2 Mic + 1 Receiver - iP Interface Automatic connection: 2.4G wireless technology chip,automatic pairing when powered on,no other operations required,easy to use Intelligent noise reduction: high-end capacitor noise reduction microphone,omnidirectional ultra-clear sound reception Back clip design: easy to install,very easy to carry,so that the transmitter can be very convenient and quick to clip on the clothes Real-time monitoring: The transmitter can be connected to headphones for monitoring,allowing for a more perfect sound recording effect while listening Recording without power outage: The receiver is equipped with a direct charging interface for phone charging while recording Specifications: Material: ABS Input voltage: 5V Microphone battery capacity: 70mAh Charging case battery: 600mAh Use time: 6H Signal-to-noise ratio: 64DBM Adaptive noise reduction Transmission delay: 30MS Sensitivity: -42DB Frequency response range: 20-20KHZ Transmission distance: barrier-free 20 meters Transmission technology: 2.4G wireless technology Package included: 2 x Lavalier Microphone 1 x Receiver 1 x Charging Case 1 x Charging Cable 1 x English User Manual