CP0033B Features Great microphone for home and meeting High sensitivity capacitive microphone Adapterization mode General Specs Type Capacitive wired microphone Directivity Omnidirection Manufacturing Component Transistor Radio Frequency 100-16KHz  Receiver Audio Output Electric Level 4.5V Sensitivity  -52dB±3dB Power Souce Voltage 4.5V Output Power 0.5W Distortion Rate 100% Gain Control Range 50 Package Details Weight: 12.84 g Size: 18.5*2.5*2.5 cm Package Includes * Microphone