Detailed Product Description LED strolling message T-shirt,LED flash t-shirt, wi-fi el t-shirt ,LED tshirt ,flash tshirt ,light tshirt ,el products ... ,flash clothing :Specification of LED ... to down and flashPower: 2pcs CR2032 batteryPCB size: 117x37mmT-shirt: 100% cotton, 190g/sqm with black color. Size can ...