Professional 4-in-1 Wireless Microphone System with 4 Transmitters & 1 Receiver, 2.4GHz Wireless Technology, Real-Time Monitoring, 360° Sound Capture, Ultra Clear Audio, Noise Reduction Chip.Plug & Play Auto Pairing, Type-C Fast Charging, Up to 50m Transmission Range, Suitable for DSLR, Smartphone, Laptop & Mixer.