I brought it 5 years ago, selling as it’s no longer required. There are multiple marks on the body and top of the device. Only comes with USB cable. It may need re-pairing to a device. I haven’t used it in so long I can’t recall much. Should still be working however. Top is touch sensitive. Specifications here - https://images.aukey.com/en/downloads/20190521170903-BR-O8_User_Manual.pdf
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