JBL Wireless Dual Microphone Set

Yesterday, I bought this item from Galle Mobile Studio. I want to sell it because I already have an Anker Soundcore PartyBox, and these JBL Dual Wireless Microphones are not compatible with it.

When I requested a return, they refused, saying that the package was slightly damaged, so they cannot accept it back.

I have all the bills, and they also provided a 3-month warranty, confirming that these are original JBL Dual Microphones.