... led writing board,magic led writing board,led flashing writing board,etc. Make eye-catching DIY advertising with color fluorescent marker pens ... for bard,coffee shops,fast foods shops,discotheques,clubs, hotels, boutiques, supermarkets, fairs. led writing board,ultra ... sizes. How to work: 1.Writing or drawing on the board with special marker pens 2.Connect to the power, press ...