The HUIOP S18 Mini Wireless Microphone 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 and features AI intelligent noise reduction and reverb support. The microphone has a frequency response of 20Hz-20KHz and a sampling rate of 48KHZ. It comes with 2 microphones, 1 receiver, an iOS converter, charge cable, and user manual. The microphone has a built-in DSP active noise reduction technology and a 60mAh lithium battery with 5 hours of working time. It is compatible with Type-C Android devices and comes with an iOS Converter. The product is portable and suitable for YouTube and Facebook live streaming.