Watchfire's monochrome LED signs are true classics and helped to set the standard for LED signage. No longer are you tied to a one- or two-line scrolling text message when you choose monochrome. The higher resolution 19mm Watchfire uses more than 4000 shading levels, providing depth plus high resolution detail. Images and animated messages show up with a vivid splash. The lower resolution 35mm Watchfire provides less detail and depth, but still plenty of attention-getting punch.