Features: 1. Suitable for weddings, conferences, speeches, karaoke, etc. 2. Stable signal and UHF band 25 channels - The anti-interference wireless microphone uses UHF radio system, providing 25 channels to choose from and the signal is stable. 3. Plug and play, long-term use - wireless microphone is easy to use, no need to install any other application software. The wireless microphone is powered by 2*AA batteries and can typically be used for 10 hours (depending on battery quality). The mini USB receiver has a built-in battery for up to 6 hours, and you can also use it while charging. You can also see the power and signal indicators on the microphone's LED screen. 4. High-quality sound up to 50 meters - equipped with dynamic microphones with professional lifting technology and microphone windshield, which can reduce the environmental noise and provide you with clear and bright sound. The effective distance is up to 50 meters. 5. More compatible 3.5 audio adapter - wireless receiver uses 6.35mm plug, can be directly connected to the 6.35mm interface device. 6. Metal microphone and friendly service - The housing of the microphone head and microphone is made of metal and has a strong structure, high impact strength and pleasant hand. Specification: Condition: 100% Brand New Material: ABS+ Steel Modulation Method: Digital Frequency Modulate Frequency Range: UHF 500-980Mhz Preset Frequency: 8 (Auto Paring) Frequency Response: 75Hz-18KHz Signal to Noise Ratio: >98dB Use Distance: up to 50M Micro Receiver: Use Power: Lithium Battery 500MA Use Time: up to 6hrs Charging Time: About 1 Hour (5V1A) Handheld Microphone: Transmitting Power: 30W Microphone Battery: 2 * AA Batteries Use Time: 10 Hours Size: As picture show Package List: 2* Wireless Microphone 1* Receiver 1*USB Receiver Charging Cable 2* Anti-Slip Ring 2* Sponge Cover 1*3.5 mm Adapter 4*AA Battery 1* User Manual Note: 1. Be sure to charge the receiver using the supplied USB charging cable. Other USB cables may not work properly. 2. Do not place the bottom of the receiver in the location of the antenna to avoid interference with signal transmission. Do not cut the signal line yourself. 3. Do not point the microphone directly at the speaker, as it will generate static noise and interrupt the output. 4. It is not recommended to use the product for portable speakers with less than 15 watts 5. This is not a compatible with Bluetooth microphone. You need to plug the mini receiver into the sound system for audio output. 6. When you experience a low volume of the microphone, check the battery condition. 7. When using this microphone in some important situations, please reserve a spare battery. User Settings: 1. This module can be frequency modulated. Generally, it is already good for the factory. 2. Under normal circumstances, do not use FM, if you have interference, you need to adjust the frequency. 3. Under normal circumstances, don't arbitrarily mobilize, so as not to be confused by the channel. Repeated Frequency Method: 1. The receiver is turned off, the microphone is turned off; 2. Unscrew the microphone battery cover, press the frequency button above the battery cover and then press and hold the power button. Press and hold the two buttons at the same time for about 3 seconds to wait for the display to flash and then let go; 3. Turn on the receiver, the receiver will flash three times; 4. Press the microphone frequency button, the receiver lights up the microphone indicator is normal.