Well.....the left one went crazy and kept running the volume up and down from low to wide open. The right one just stopped working. I knew they would either fix them or replace them.....but the biggest problem was they would not stay in my ears....kept working out and every 10 to fifthteen minutes i had to poke them back in and that was making my ears sore. They told me that I had unusual ear canals and that i needed a custom mold thing on the end made to fit my ears .....they said they would make them up at no charge. Kinda made me mad that they did not do that to start with because when the tested and examined me they told me my ear canals were different. I was fed up and told them to give me my money back. I might try again at a later date and go to a different place. But the first few days when they were supposedly working right I really did not think they made much difference....i could hear a little better but I would miss a word here and there. I thought I was hearing better and then I realized people still had to repeat stuff.

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