The CAD Audio E19SL Equitek Miniature Earworn Mic with TA4F Connector for Shure Transmitters is a broadcast-quality behind the ear headset mic that can be used to capture audio when paired with a wireless transmitter and receiver (sold separately). It can be used in speech applications for broadcast TV, schools, live stage, theater, houses of worship, DJ setups, and more. The E19 Equitek Miniature has several features such as a low-profile design that helps to provide ease of use, comfort, and stability. The headset mic also provides maximum intelligibility; however, the E19 has a natural and accurate reproduction, even for the most demanding performer. In addition, a foam windscreen is included, as well as a replaceable cable that terminates in a TA4F connector wired specifically for Shure wireless transmitters.Product Specifications: Sound Field: Mono Element Type: Condenser Polar Pattern: Omnidirectional Frequency Range: 20 Hz to 20 kHz Maximum SPL: 138 dB SPL Sensitivity: -46 dBV (5.0 mV) @ 1 Pa Impedance: 1200 ohms Power Requirements: 5 VDC bias Connector: TA4F (terminated for Shure) Color: Beige Included Case: No Certifications: RoHS, as per Manufacturer Weight: 0.4 lbs. Shipping Weight: 1 lbs. Shipping Dimensions: 7.8 × 4.6 × 1.4 inches