The MX183 is a wired lavalier electret condenser microphone designed for speech and vocal pickup general purpose sound reinforcement recording and remote monitoring applications. It can be clipped to neckties lapels and other articles of clothing. Interchangeable cartridges make it possible to easily reconfigure microphone coverage as the need arises. The Microflex Lavaliers are completely compatible with all Shure Wireless transmitters and their high sensitivity and wide frequency response guarantee great sound with a minimum of RF interference or electromagnetic hum. Plus each Microflex Lavalier features the same Shure quality sound that has become an industry standard.