Features: Wide frequency response, high S/ Nratio Plug & play, easy to use No hitting when putting in the switch, so can protect the amplifier & Speakers UHF microphone: Steady signal, Dual frequency design. Clear Sound: Dynamic microphone, Professional microphone core. Comfortable Appearance: Plastic handheld, Metal receiver, Portability design Strong anti-interference ability for stable signal with receiving distance range of 30-100 meters Strong pickup & clear sound, no noise with constant frequency. Thick metal mesh cover, anti-fall & anti-deformation, with built-in high-efficiency filter cotton to effectively filter wind noise Wireless Microphone System: The wire-free design means that you can go further than you would with a wired microphone & without the cable trailing along the floor. It gives you a greater freedom of movement without getting tangled in the wire as you do so. This makes the microphone perfect for use when presenting to an audience A wide range of device support applications, as long as the device with the microphone interface can be connected. Technical specifications:1. Frequency range: UHF frequency 2. Channel: 8 channels, the ID code changes randomly.3. Oscillation mode: DSP chip frequency lock.4. Frequency stability:10ppm 5. Frequency power: 10d Bm 6. Frequency response: 40 ~ 18 K Hz 7. Distortion: 0.5%8. Battery: 1.5V / AA size 9. Working time: 4-8 hours. Receiver specifications:1. Frequency range: UHF frequency 2. Channel: 8 channels, the 1D code changes randomly