@woot I just watched a Utube video on this device as my doctors won’t allow me to use any kind of vest so I am interested in this device even though it is typically for CF. It was an interesting video and says the device comes with earplugs due to the sounds that come from it. Similar to the CPAC insurance will cover the device if it is used and shows positive results. Let us know how you do with it. Good luck. irene5