With completely wireless earbuds, the rule is: when the battery fails, they have to be disposed of. Not so with the Fairbuds, that allow you to replace batteries in just a few seconds. Combined with a repairable design, the earbuds should therefore have an extremely long lifetime.
What are you talking about? They show the headphone battery being replaced in the same image as the case. It’s a little button cell that hinges out.
I didn’t see that piece, just the case battery.