The Nady DKW 1 LT is a cost effective VHF Wireless Lavaliere Headset microphone system. It's easy to use and only takes a few minutes to set up. Delivering clear, transparent, high fidelity audio, the DKW 1 LT systems can be used for a broad range of singing and speaking applications, karaoke and recreational singers, DJ's, auctioneers, teachers, aerobics instructors, clergy, and a host of others. It features an advanced audio processing circuitry for a wide dynamic range no overloading for loud inputs or background hiss during quiet use.