Earphones; Headphones; Adapter cables for headphones; Audio cables; Earphone accessories, namely, earphone cushions, earphone pads, earphone cases, and earphone extension cords; Earphone holders for keeping earphones in the ears; Audio headphones; Earpads for headphones; Earphones and headphones; Music headphones; Noise cancelling headphones; Personal headphones for sound transmitting apparatuses; Personal headphones for use with sound transmitting systems; Transmitters and receivers for audio and video signals for transmission over twisted pair cables; Wireless headphones