After returning the hearing aids after 30 days on November 15, 2020, I have been fighting with Nano to refund my money. They first advertise 45 days but after 60 days of their "be patient", I had my credit card company debit me my money only to have them credit me a month later since the 20 plus pages of emails weren't enough. So now, after more excuses, nearly 5 months later, they ask me for info that they have had since October, 2020. They have shown no interest at all to return my money, only hoping that I will give up. User's recommendation: Do not buy anything from Nano. Refund policy is a sham.