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.
They are called “Wireless” headphones when there is a wire connecting them. “True Wireless” means two separate earbuds.
Then “true wireless” is a bad experience, at least from my eyes.
Ears?