led t shirt led dot matrix: 7*21 dots size:11.7 ... nine colors, 6 text message. two batteries, three buttons led t shirt Features/specifications: 1. Red, blue, green, white, and more ... 3.7 x 0.57cm (approximate) 8. Package includes:Programmable t-shirt scrolling LED panelTwo (2) CR2032 batteries and User's ...