The Mini Wireless Lavalier Microphone Model S18 is made of aluminum alloy and uses a 2.4G transmission protocol for a stable signal. It has a transmission distance of at least 20 meters barrier-free and 10 meters with obstacles. The microphone features AI intelligent noise reduction, reverb support, and a sound delay of ≤30ms. It has a -38dB±3dB omnidirectional silicon microphone with a frequency response of 20Hz-20KHz. The microphone has a 70MAH lithium battery with a 5-hour working time and charges in about 2 hours. It comes with a charge case, 2 microphones, 1 receiver, 1 iOS converter, charge cable, and user manual. The microphone is compatible with Type-C Android devices and comes with a DSP active noise reduction technology for clear audio quality. It is suitable for YouTube and Facebook live streaming.