This is a two-transmitter wireless system from Hollyland that records high-quality sound through a wireless microphone and a lavalier microphone. Both transmitters come with a lavalier microphone and windscreen. The receiver and two transmitters are simply charged in the supplied pouch. The video inserted above was recorded on a Lark150. The audio of the video comes straight from the camera as captured with the Lark150. No effects or noise reduction have been applied to the audio in the post. What you hear in the video is exactly the same as recorded by the camera over a wireless system. You should be able to expect the same quality based on your own experience with this system.