PREMIUM WIRELESS PERFORMANCE: 4 channel UHF wireless microphone system with selectable frequencies. Employs PLL frequency synthesized technology to provide hassle-free sound transmission, minimum dropouts, and maximum feedback rejection. Smooth and quick IR synchronization. Long range operation of 290ft – 328ft line of sight. STURDY BUILD, MULTICHANNEL MULTISET FEATURE: Sturdy metal builds for the wireless receiver and quality build for bodypack transmitters. The black colour of the wireless headsets and lavalier mics enable great invisibility and professionalism during the performance. The mic cartridge is engineered for clear robust optimal true sound. Multichannel feature with 4×40 channels, enables users to select different frequencies when preset frequency fails, thus ensuring reliable performance. AUTO SCAN FEATURE AND ANTI-INTERFERENCE FEATURE: UHF microphone system equips with auto scan function, which enables the system to search for the least interference channel to pair up with transmitters. It also has one 1/4” mixed output and 4 XLR separate outputs. 4 antennas design increases the anti-interference ability and decreases interference between each channel. Ideal for church, wedding, karaoke, DJ, stage shows, public speaking, etc.