Freestyle FHM-060 Flex-Neck microphone introduces patented NCAT solution (Noise Cancelling and Amplification Technology). It will provide optimal voice clarity for voice command, Internet telephony, educational software, and other multimedia applications. Tech spec: Sensitivity: -67db/ +/- 4db Power source: 1m5V DC Impedance: 2K Ohm Frequency response: 100Hz - 16KHz 2m shielded cord, Connection: 3,5mm jack NCAT - Noise Cancelling and Amplification Technology