I bought this product because as a nurse I need to hear what is going on with my patients in order to provide them with the best care. I noticed I wasn’t hearing as well as I once did and I was afraid I was missing important sounds. I found Eko Core and have been very pleased!! I like how I can turn up the volume when I need to. I am still using my first charge, so the battery last a long time. The app is fun too but I only use it for myself or my family because of HIPPA.