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.
You don’t know what DNS is, do you?
Basically your device (for example your phone) needs to know the ip adress of any service it wants to connect to. As you may know these services usually use addresses like Lemmy.org or google.com or whatever.
To know what IP adres is behind these addresses, you device needs to ask a dns server, in a local network (like your own WiFi) this is usually your router, but you can set it to any arbitrary device you want. This way you can see what addresses are being asked for by your device.
So if the app want to send data to some server, it usually needs to resolve the adress first. And you can see that.
Data 'n stealing