The Latest Upgraded Wireless Microphone Headset System, Adopts 2.4g Wireless Mission Technology, 165ft/50m Barrier-free, Stable Reception, Low Latency, And Anti-interference. Uses A Unidirectional Condenser Microphone To Effectively Filter Background Noise, And Uses An Intelligent Noise Reduction Chip To Effectively Suppress Noise, So That You Can Clearly Convey Your Voice Even In A Noisy Environment. We Provide A 3.5mm To 6.35mm Adapter To Provide You With More Choices. Widely Compatible With Audio Amplifiers/high-power Speakers/portable Pa Systems/hybrid Microphone Speaker Systems. The Usb Charging Cable Has Two Ports, Which Can Charge The Mitter And Receiver At The Same Time, And The Working Time Is 6-8 Hours After Full Charge. Easy To Use, Please Turn On The Power Of The Mitter And Receiver, Long Press The + Volume Button To Start Pairing, And The Indicator Light Stops Flashing After The Matching Is Successful, And It Can Be Used Without Further Operation. Suitable For Teaching, Lectures, Meeti