XTUGA A400-B Professional 4-Channel UHF Wireless Microphone System with 4 BodyPack Lavalier Headset Microphone 1. Professional UHF microphone system delivers clear amd lound audio signal and is much more stable than the VHF, 4-channel wireless microphone receiver, fixed frequency,superior anti-interference ability. Upgraded wireless signal acquisition, 4 antennas can be installed on the back of the receiver to enhance the received signal, ensuring high frequency stability and accuracy 2. The receiver has four XLR balanced outputs and one 14 inch (6.35mm) mix output jack that can be externally connected to a variety of external devices such as amplifiers, mixers, stereos, and more professional wireless microphone system.Better sound quality improvements, separate volume control, and adjustable sound output as needed, making it the perfect choice for any outdoor event such as parties, weddings and presentations.With an operating range of up to 200 Ft 3. Both the receiver and the microphone have a high-end LCD display, and the battery usage and working status are clear at a glance.Metal receiver and Bodypackmicrophone, Provide a better experience 4. Stable transmission technology, FCC certification and comply with new FCC rules.the fixed frequency points are: Group A: 504.50MHz, 514.60MHz, 521.90MHz, 538.70MHz; Group B: 553.70MHz, 577.10MHz, 586.70MHz, 593.20MHz. Specifications: 1. Material: Metal+ABS 2. Frequency: 504.5-593.2Mhz fixed frequency 3. Receiving distance: 50 meters