- Microphone Sensitivity: 72dB<br />- Frequency Response: 100 to 10、000 Hz<br />- Output impedance: 600ohm<br />- Operating Voltage: 1.5 v DC<br />- Effective Distance: about 15 m<br />- Transmitter powered by 1 x AA battery (Included)<br />- Receiver powered by 1 x AA battery (Included)<br />- Package includes:<br />- 1 x Microphone<br />- 1 x Receiver<br />- 1 x Wire for wired microphone<br />- 1 x Wireless Antenna<br />- 2 x AA Batteries<br />- 1 x English Instruction Manual<br />- 1 x Black Case for storage<br /><br />                                                                                                                                Dimensions: 6.89 in x 1.65 in x 1.65 in (17.5 cm x 4.2 cm x 4.2 cm)<br />Weight: 4.87 oz (138 g)<br /><br />