Detailed Product Description LED t shirt ,flash tshirt ,light tshirt ,EL sounds T-shirt product, el sound active t shirt,el tshirt ,T-shirt :Specification of LED PanelHold up 6 messages ... , up to down and flashPower: 2pcs CR2032 batteryPCB size: 117x37mmT-shirt: 100% cotton, 190g/sqm with black color. Size can do ...