Nady 401X QUAD Wireless 4-Channel Handheld + Headset + Lapel / Lavalier Microphone System &ndash; 6 Microphones Bundle A full set of professional features. Unsurpassed state-of-the-art VHF performance with operation up to 500 feet line-of sight. Ideal for live performance, concert, theater, sports, church, and presentations Proprietary companding and low-noise circuitry for an amazing 120dB dynamic range Four discrete VHF wireless receivers in a single rugged 19 1U, all-metal rack mount housing. (2) WHT-15 handheld transmitters, (2) WLT-15 bodypacks, (2) HM-3 headmics, and (2) LM-14/O lapel microphones included HM-3 headset microphone - Designed for extended, comfortable wear and provides excellent audio quality with its omnidirectional condenser element. LM-14 lapel microphone for ulta-low profile audio capture and projection of your subject This is a single fixed-frequency wireless system. Please consult the manufacturer to confirm compatibility when attempting to use two or more of this system simultaneously or use it with other wireless systems.