... 3)easy to use 4)high quality led writing boardLED writing board LED as light source, high brightness the ... eraser not remain any trace.Flashing,change or steady color,wonderful effect.Application placestores,clubs,shopping malls,bars,shops ... PMMA./optics glass.Unbreakable,non-scratch, Ligh source:superior LED-5050Light color:RGB full color.Application place:schools, Shopping malls, bars, disco, ...