Features: 1.Perfect for weddings, conferences, speeches, karaoke, etc. 2.The wireless microphone uses UHF radio system and offers 25 channels to choose, effectively prevents interference and provides you with stable signal. 3.Plug-and-use, no need to install other APP, long work time. 4.The wireless microphone is powered by two AA batteries and usually lasts 10 hours. 5.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. 6.The dynamic microphone is equipped with professional pickup technology and microphone windshield to reduce ambient noise and bring you clear and bright vocals. Effective distance up to 100 meters (preferably within 50 meters). 7.The wireless receiver uses 6.35mm plug, can be directly connected with 6.35mm interface device. We also have 3.5mm AUX adapter for more audio devices, such as BT speakers, desktop computers, etc. 8.The microphone head and shell are made of metal, strong structure, strong resistance and comfortable to grip. Specifications: Item Type: UHF Wireless Microphone Material: Aluminum Alloy Color: Black Modulation Method: Digital frequency modulate Frequency Range: UHF 500-980MHz Preset Frequency: 8 (Auto paring) Frequency Response: 75Hz-18KHz Signal Noise Ratio: >98dB Use Distance: UP TO 50m / 164ft Micro Receiver Product Size: Approx. 93 x 31 x 20mm / 3.7 x 1.2 x 0.8in Use Power: Lithium Battery 500MA Use Time: 6 hours Charging Time: About 1 hour (5V1A) Handheld Microphone Transmitting Power: 30W Microphone Battery: 2 AA batteries Use Time: 10 hours Packing List: 1 x Wireless Microphone 1 x Receiver 1 x USB Receiver Charging Cable 1 x Anti-Slip Ring 1 x Sponge Cover 1 x 3.5 mm Adapter 2 x AA Battery 1 x Instruction 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 where the antenna is located 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, such as for Doss touch, etc. 5.This is not a for Bluetooth microphone. You need to plug the mini receiver into the sound system for audio output. 6.When you encounter a low volume of the microphone, check the battery status. 7.When using this microphone in some important situations, please reserve spare battery. User settings: This module can be frequency modulated, generally the factory has been good frequency. Under normal circumstances, do not use FM, if you have interference, you need to adjust the frequency. Under normal circumstances, do not arbitrarily mobilize, so as not to be confused by the channel. Repeated frequency modulated 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. .