Feature:1. Professional In Ear Monitoring System: Automatically pairing Cordless transmitter and receiver, no channel switching needed. Ideal for studio, band rehearsal, live performance, camera recording.2. 5.8G Cordless Technology: The Live Broadcast monitoring headset features 5.8G Cordless technology for lossless sound quality and low noise or latency. One touch switching of mono or stereo inputs provides slick frequency response for any headphones.3. Multiple Receiver Pairing: Multiple receivers can be paired with a single TX at the same time when using our live monitoring headphones, catering for small to medium sized dance performances and daily practice.4. Versatile Usage: Cordless digital live monitoring headphones are perfect for all kinds of sound monitoring activities, stage performances, studio recordings, exhibitions, lectures, tutorials, speeches and more.5. Advanced Circuitry: The Cordless live monitoring earphone adopts advanced circuit design, excellent chip, eliminating the reception of blind angle, so that the reception signal of the system is stable.Specification:Item Type: Cordless In Ear Monitoring SystemReceiver Built in Battery: 370mAh Lithium ion BatteryTransmitter Built in Battery: 370mAh Lithium ion BatteryPlayback Time: Approx. 24 hoursSystem Distortion: 0.03percentage at ODB or 1KHZFrequency Response: 10HZ-20KHZCarrier Frequency: ISM Band 5.8GHzAudio Quantization Sampling Rate: 24-BIT or 48KTransmission Delay: Approx. 6.5MSMaterial: ABS.Package List:4 x Receivers1 x Transmitter4 x Earphone Cables1 x Audio Cable5 x USB Cables1 x Type C Cable2 x User Manuals