... .8*800mm2,color:blue,red,yellow,green,orange,etc3,Battery:2CR203 2 button batteries4,switch:constant shining+fast flashing+ ... .red yellow , green blue (total 9 colors)material1.high optical glass fiber2.battery:CR2032 button lithium battery each shoes lace have 1 ... battery last 30-80 hoursLight way1. ...