The CAD Audio E19SR Equitek Broadcast and Production Miniature Earworn Microphone - Terminated for Sennheiser is a lightweight earset mic engineered to provide clear, broadcast-quality speech for presenters, instructors, performers, and journalists. Its lightweight and low-profile design provides a visually discreet appearance and is well suited for professional speech applications in broadcast TV, education, live presentation, theater, houses of worship, and more. The ergonomic design is comfortably worn behind the ear and features a replaceable cable that terminates in a 3.5mm locking mini-jack connector wired specifically for Sennheiser wireless transmitters. If you need to use the mic with a different wireless system, simply replace the cable with the appropriate connector needed for the bodypack transmitter. The mic's electret condenser element requires 5 VDC for operation, and a foam windscreen is included to reduce breath and plosive noise. Product Specifications: Operating Principle: Permanently-polarized condenser Polar Pattern: Omnidirectional Frequency Response: 20 Hz – 20 kHz Sensitivity: -46 dBV (5.0 mV) @ 1 Pa Impedance: 1200 ohms Max SPL: 138 dB Power Requirements: 5 VDC bias Connector: Terminated for Sennheiser wireless systems Included Accessories: Foam windscreen Compliance: RoHS Compliant Weight: 0.4 lbs. Shipping Weight: 1 lbs. Shipping Dimensions: 7.8 x 4.6 x 1.4 inches