1. High-quality IC chips enhance overall performance, resist frequency drop and crosstalk, and ensure a secure and stable signal. 2. UHF infrared matchhing and dual-channel transmission effectively prevent signal interference. 3. Supports Bluetooth 5.0 mobile phone connectivity, reproducing lossless sound quality, and enhancing the convenience of audio recording or monitoring. 4. High-quality copper core antenna enhances signal stability and a reception range of up to 300 feet. 5. Bodypack receiver for easy portability and 4-6 hours of battery life. 6. Equipped with in-ear monitor headphones for pure and high-fidelity sound quality. 7. Suitable for stage, broadcast, recording studios, concerts, band performances, conferences, and more. Specifications: Modulation Method: Pi4-DQPSK Frequency Range: 610-786MHz, 2x100CHS 4x50CHS Sampling Rate: 48kHz Transmission Speed: 204.8KBPS Dynamic Range: More than 90dB Total Harmonic Distortion: Less than 0.1% Delay Time of Transmission: Less than 3ms Signal-to-Noise Ratio: More than 96dB Frequency Response: 30-20kHz Receiver Sensitivity: Less than -94dBM Unique ID Address: Yes Receiver Power Supply: 2 x AA Batteries (not included) Package Included: Host x 1 Power Adapter x 1 Bodypack Receivers x 2 Earphones x 2 Antenna x 2 Audio Cables x 2