AudioComm wireless earphones, model HP-BC110N, which utilize bone conduction technology. The charging port on the Bluetooth unit has some rust, but it does not affect functionality. Also, the charging cord is a different white cord. This is a used item, so there is some wear and tear. Please understand and accept that this is a used item before considering a purchase. Please refrain from purchasing if you are sensitive to imperfections or if you are looking for a perfect item. - Brand: AudioComm - Model: HP-BC110N - Power Supply: DC5V - Connection Type: USB-C Thank you for viewing. Thank you for your consideration.