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.
I like the infinite battery life wired headphones have.
Don’t forget the little string so you can easily pop em out and let em dangle without losing them.