Inconspicuous cardioid clip-on microphone with mini XLR connector and a rugged metal housing. From The Manufacturer: The CK99 L is a condenser lavalier microphone with cardioid polar pattern. It provides a natural sound, with a slight rise above 10kHz for added clarity, perfect for applications in houses of worship, lectures and theaters. Thanks to its small housing and the included durable metal clip, it can be inconspicuously and securely mounted on jackets and costumes. The CK99 L provides a professional three-pin mini XLR connector that fits the body pack transmitters of all AKG wireless microphone systems. Features: Audio frequency bandwidth 150 - 18000 Hz Equivalent noise level 34 dB-A Sensitivity 8.8 mV/Pa Signal to Noise 60 dB-A Electrical impedance 200 Ohms Recommended load impedance 2000 Ohms Polar Pattern Cardioid Height 23 mm Diameter 8 mm Net Weight 2.5 g Finish matte black Type Mini XLR Gender Female Contacts 3-pin Cable Length 1.6m (5 ft. 3 in.) Voltage 1.5 to 10 V Current 2 mA