The C544 L high-performance head-worn miniature condenser microphone with an easily fitting headband is perfect for gymnastics instruction and other handsfree speech applications. A transducer shock mount reduces body noise to a minimum and the short microphone arm places the microphone in the right position to the mouth to minimize pop and breathing noise. A special moisture shield on the boom prevents the microphone from being clogged by sweat or makeup. The C544 L comes with a three-pin mini XLR connecter which fits all AKG WMS Series body-pack transmitters. The package also includes a special windscreen. General Specifications TypePre-polarized condenser microphone Polar PatternCardioid Frequency Range80 – 20000 Hz Sensitivity25 mV/Pa (U=9V, R=10kOhm) Impedance @ 1kHz<200 Ohms Recommended load impedance>2000 Ohms Max SPL for 1% THD120dB Equivalent noise level (IEC 60268-4)30dBA Signal to Noise Ratio (@94dB SPL)63dBA Recommended Serial Resistor10kOhm (2kOhm – 10kOhm) Dimensions Dimensions145 x 110 x 70 mm / 5.7 x 4.3 x 2.8 in. Net Weight30g (1.1 oz.) Shipping Weight200g (7.1 oz.) Design Finishmatte black Audio Output TypeMini XLR GenderFemale Contacts3-pin Cable Length1.5m (5 ft.) Powering Interface Current Consumption<2mA (<500uA if U-9V, R=10kOhm) Operating Voltage9V (2V – 10V) Application Sports / FitnessYes Assisted ListeningYes Sound ReinforcementYes PresentationYes RetailYes Device Headset MicrophoneYes