Nano Hearing Aids is a very disreputable company. I ordered a pair of hearing aids from them. Decided I didn’t want them and, following their recomendation, I sent the unopened parcel back to them. Their website guarantees a refund. Its been four months. After several phone calls to them and about fifty e-mails back and forth, I still have not received the refund. They are a terrible, dishonest company, do not deal with them.