This Boytone BT-48UM, UHF wireless microphone system employs PLL frequency synthesized technology to provide highly stable, adjustable frequencies from 470 – 580MHz and, in total of 100 digital channels for interference-free operation, minimum dropouts and popping noise, and easy pair up when synchronize receiver and transmitter. Metal Cordless and Metal Base Rugged metal construction for wireless mic receiver and handheld mic. Premium card dynamic cartridge is designed for clear, robust, optimal true sound, which makes this system ideal for DJ, professional band performance, interview, party, karaoke, conference, and church, excellent high-fidelity audio. 164+ ft. typical operating range — up to 300+ ft. line-of-sight Both the receiver and the mic has a power ON / OFF switch and the receiver has LED status signal indicator light and dual independent antenna. Two XLR outputs jack for more professional use and one 1/4'' mixed output. Package includes 1/4'' to 1/8'' adapter for use in devices that have 1/8'' audio input. Can also purchase extra bodypack/headset/lapel mics for various needs. Operation range is up to 164ft in open space *to get longer distance, please avoid thick walls, glass, and metal block Dual-channel UHF metal receiver with XLR and 1/4'' outputs, 2 UHF wireless mics, 1/4'' audio cable, power adapter(110-240Volt), 1/4'' to 1/8'' cable adapter, 4 AA battery, 2 antennas, user manual comes with aluminum carrying cases Genuine Boytone BT-48UM come with 1-year warranty.