1Sensitive sound pickup, efficient noise reduction, and pure sound quality. 2Long battery life, builtin 400 mAh battery, you can use it with confidence. 3The charging method can be charged with a US plug or USB cable, very convenient for use. 4Small size, comfortable and convenient to carry, convenient for lecture or live broadcast. 5Plug and play, automatic frequency connection and stable signal, long-distance continuous connection. Item Type: Head-Wear Microphone Material: ABS Frequency Range: 803MHZ-806MHZ Modulation Method: Digital Modulation Signal to Noise Ratio: 100DB Frequency Response: 40HZ-20KHZ Distortion:1 x Microphone 1 x Receiver 1 x US Plug 1 x USB Cable 1 x 6.5mm o Converter This UHF wireless microphone needs to be used with o or power amplifiers, loudspeakers, etc, and cannot be independently amplified. As long as there is a microphone socket or o input socket, after the receiver is plugged in, it is automatically connected after poweron, and wireless amplification and KTV functions can be achieved.