LED Handwriting Lighted Menu Sign Boards 23" x 18" display for Messages, Ad, ... Size of Board: 23" x 18"[stand not included] Surface: Madeof rigid abrasion resistant acrylic board, with superb translucency forefficient lighting. Large firm writing area for unlimited creative choices. Easy to write-on and wipe-off. Durable for repeated use. LEDs:Best-in-class, with light emission up to twice as bright as other products. Energy-saving, environmentally-friendly with extended longevity Outer Frame: Fabricated from high quality aluminum alloy. Galvanized for protection. Flashing Modes:Simple button control with 7 LED colors. Various flashing modes, speeds, with multicolor combinations to grab public attention.