I am selling these for a friend, I don't know much about them but they do work.
The reason they are being sold it there is only one charger for the speakers, which is fine, charge one then charge the second, its nothing but a standard wall wart 12v adapter.
Also the sender unit is portable rechargeable via a simple 5v wall wart power supply which he misplaced.
I own a bench variable power supply that I used to charge the sender so you can use the speakers right away
But any low-cost 5v adapter will work.
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