Ill buy a replacement card from a different manufacturer. I ordered this for my soon to be 5 year old granddaughter. Download an app and create an account3. Can?t wait to be allowed back into a gym to wear them (lockdown envy) I bought two and this was case in both; I tried different headphones, so I know its the USB port, not the headphones. They are Sooooo comfortable. Overall, I believe they will last several months and I hope with time, they will shape with the foot so my dad with dementia will be able to tell with ease. These are great hitch parts yet should not be this expensive. I wore these and walked in them for maybe 30 minutes total. Very disappointed with this product.