... not broken, no radiation,strong brightness, high hardness, with no scratches for many years, easy to transport.Our led ... :- Eye- catching, attention grabbing 7 ultra bright, vibrant LED flashing colors - With multiple flashing modes of flash / strobe / fade / smooth - Eco- ... long life span, recycled, repeatedly written3. Erase easily with the soft cloth and without any trails.4. Strong abilities ...