ah a ơi,a xem cho e cái này luôn xem sao nhé
http://www.music.com-wide.info/Audio-Technica_ATH-EM7_GM_Adjustable_Aluminum_Clip-On_Headphones_Electronics_1035
http://www.music.com-wide.info/Audio-Technica_ATH-EM7_GM_Adjustable_Aluminum_Clip-On_Headphones_Electronics_1035