Want to record the voice of multiple people? And put that into a video or podcast? Then this 4-channel wireless microphone system is just what you need. The by-w4 is a microphone system that offers broadcast quality and reliable performance with crystal clear and clean sound. With 4 channels, it is perfect for multi-person interviews, live performances, live streaming, conferences, panel discussions or other events. Thanks to the integrated high-quality omnidirectional microphone, your voice will be heard loud and clear. With a sensitivity of -42 db, even the smallest details in a voice are perceived. Weighing less than 13 grams, the by-w4 is portable and can be conveniently taken anywhere. Whether you're a musician, presenter or event organizer, it's the best choice for 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 and so on. With a male 3.5mm trrs plug to double female trrs monitor cable, you can listen to the audio at any time while recording. Application boya wireless microphone by-w4 for smartphone connect the rx receiver to your smartphone using the included 3.5mm trrs to trrs cable. Listening to the recordings is possible with headphones without any problems. Before you start recording, press and hold the power button. Then pair the transmitter(s) and the receiver. Make sure everything is paired correctly by pressing the power button twice. Once the blue lights turn green, you're ready to shoot.