Getting rechargeable wireless gear is proof that someone is underage.
Batteries die. You have never owned something that became useless after the internal rechargeable battery died. It is objectively better to get the wired version of anything. The only acceptable batteries are removable ones like pic related.
If you get something like a keyboard that you can plug in, and it will still work after the battery dies, that can slide. Ideally, it doesn't have a rechargeable battery at all. Something like what OP got is underage certified.