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.
Oh yeah, I overpaid badly. Well, my employer did anyway as theyg pidfor it, I just selected what supposedly was the best. It sucked.