[ Superior Sound & Noise Reduction ] - The FULAIM WM500 professional microphone with UHF Ultra High-Frequency radio wave technology and dual-antenna design, which enhances the anti-interference ability to ensure stable signal transmission and record clear sound. Bulit-in WNCR acoustic noise reduction technology, dial the "LCF" position to open the noise reduction function, can significantly reduce environmental and wind noise.[ Wide Compatibility ] -You can mount the receiver to DSLR Camera, XLR Camcorder, iPhone, Android smartphone, Laptop and PC. Widely used for YouTube livestream, Vlog recording, interview, program hosting, podcast, presentation, church, wedding.[ 16 Selectable UHF Channels ] - The package includes 4 transmitter, so the WM500 support 1-4 people recording at the same time. Every transmitter can select 4 channels, flexible channel matching. When other channels are disturbed in the same space or near distance, you can quickly switch the channel to prevent interference. Working range of the microphone system up to 50 meters in open areas.[ Charge and Work Time ]: The Transmitter and Receiver are built-in 1000 mAh rechargeable lithium-ion batteries that can offer about 8 hours working time. USB cable has several Micro USB v2.0 for charge for the transmitters and receiver at the same time, fully charge is only 2.5 hours. The red light is on during charging and goes off when fully charged.[ Real-time Audio Monitoring ] - Connect your favorite headphones to the receiver's 3.5mm headphone jack, you can listen the sound while recording, and monitor the audio status to complete the recording at one time. Daylight-readable displays on the transmitters show volume, battery status and channels. Display on the receiver show connection quality of every transmitter and battery status.