The Bossa Mini hearing aids did not work for me. They were uncomfortable and sounded like I was screaming. They were really bulky in my ears and really stuck out. So I sent them back emailed everything they need for a refund in March of 2024. They confirmed that I would be getting my full refund. Well I haven’t yet to get my refund and it’s June 9, 2024. I keep sending emails and sometimes I get a reply back saying that they sorry it’s taking so long. But they will be in touch will customer service to expedite my refund. So if you buy them then you return them just don’t expect a refund.