About this itemWith active noise cancellation function: This wireless lavalier microphone has a built-in intelligent chip for active noise cancellation, which supports up to three levels of noise cancellation. Ensures you can take clear shots even in noisy environmentsWireless lavalier microphone: our mini lavalier microphone has a charging time of 1.5 hours and a working time of up to 6 hours and can provide up to 6 hours working time after 20 metres of barrier-free connectionEasy to use: no driver required, no Bluetooth or app required, plug and play. Simply attach the wireless lavalier microphone to your lapel, plug the receiver into the device, press the power button and it can work for you. Simple and elegant design, light weight and compact sizeLightwe.