I have an auditory processing disability, and when I needed to take a manual BP it was a struggle to hear past all the ambient sounds, including when the tubing would rustle, or move at all. I couldn’t safely be confident that my interpretation was reliable, and was so embarrassed to have to let the RN I was working under that I couldn’t perform this aspect of my job. Though I haven’t used this with people yet (I was a med/surg CNA for years and am taking an MA course in the fall) I tested it out when it arrived and was able to listen to my cat’s heartbeat, crystal clear. This is an accommodation that I desperately needed, and I can perform any assisting that is needed of me competently. It’s well worth the expense for me, even as a lower wage healthcare worker. I have a friend who’s an RN with a similar disability who I told about this, and he’s getting the attachment to add to his littmann.