... radiate,eco-friendly,durable 3.CE,SGS el wire t-shirt (factory price, good quality, timely delivery) ... details:1-Sound sensitive: The sound activated equaliser T shirt has been designed on the rhythm of ... T-shirt installing method: Sewing or with velcro.6-Flashing times: Within five times.7-Inverter battery: AAA*4 pcs(DC ... 6V), AAA*3pcs(DC 4.5V), AAA*2pcs(DC3V)8-Size ...