1.CE/ROHS/EMC 2,100% cotton,800-1000lifetimes 3.Hot custom design 4.Fast delivery ,Excellent service 5.MOQ:50pcs Product ID ... : Ellite-T097Product Name: Hot!Custom led shirt SpecificationProduct Name: Hot!Custom ... as usualEffect Sound effect3. Driver Battery :2 AAA ,3 AAA ,4 AAA They respectively can last for using 2hours,3hours,4hours ...