... T-shirt ,music flashing t-shirt,cotton t-shirt,electronic light t-shirtSpecifications:Dimension : 620*340*380NW/GW : 15/ ... for washing 4 x AAA batteries(4) Equalizer (red and blue pieces) is moving according to sound(5) When ... the sound is loud, blue and red colors are lighting, when the sound is low only ... gram 100% cotton . 2011 New design High quality hotsale Led light t-shirt