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 have Samsung Bluetooth earbuds that I have had for a few years and they work great but I rarely use them. I rarely listen to music through headphones. If I were to buy a new pair I may consider that ones from Pine.