I love this attachment. It amplifies and isolates sounds that were impossible to hear before. The only problem is that the connection to the phone is sketchy at best and you must use the phone to access certain functions such as said frequency isolation. Not sure how optimal this will be in the prehospital environment. As a paramedic, I am excited to be able to access faster and more accurately.
As a side note, I wish they would bring back the cover for the charging port.