Want to record voice audio from multiple people? And incorporate that into a video or podcast? Then this 4-channel wireless microphone system is perfect for you. The BY-W4 is a microphone system that offers broadcast quality and reliable performance with clear and crisp audio. With 4 channels, it is perfect for multi-person interviews, live performances, live streaming, conferences, panel discussions or other events. The built-in high-quality Omni-Directional microphone ensures your voice is heard loud and clear. The sensitivity of -42dB hears the smallest details in a voice. Weighing less than 13 grams, the BY-W4 is portable and convenient to take with you to location. Whether you are a musician, presenter or event organizer, it is the excellent choice for capturing clear and dynamic audio. Compatible with all devices The BY-W4 receiver has two 3.5mm TRRS output cables that work perfectly with cameras, smartphones, computers, etc. With a 3.5mm TRRS male to dual TRRS female cable, you can monitor the audio at any time during the recording process. Application Boya Wireless Microphone BY-W4 for Smartphone Connect the RX receiver to your smartphone with the included 3.5mm TRRS to TRRS cable. Listening to the recordings is easy with headphones. Before you start recording, press and hold the power button. After this you pair the transmitter(s) and the receiver with each other. Check if everything is paired correctly by clicking the power button twice. As soon as the blue lights turn green you are ready to record.