This LED writing board has 17 light settings! The wall-mounted write-on sign measures 31.5 inches wide by 23.75 inches tall and features a black surface on which users can create custom messages. The LED writing board is equipped with an edge-lit construction or red green and blue lights to perfectly light up a written presentation. The lights are located inside the edge of the framing acting as a border when illuminated. The LED message board is meant for use with either wet-erase or liquid chalk markers (not included.) We suggest using neon colors to better contrast the black background. This LED writing board provides users with 17 light effects including both static illumination and flashing presentations. To change between settings simply push the button on the outside of the frame. The 17 effects are: all colors all colors flashing green green flashing blue blue flashing red red blinking blue and green blue and green blinking red and blue red and blue flashing red and green red and green blinking slow fade in-between colors all colors chasing all colors flashing quickly blend of all settings. Included with a purchase is the necessary hardware to mount the LED message board to the wall. Also provided is a wire chain to hang the display from the ceiling if you’d prefer. The hanging wire is 40 inches long. The illuminated menu display works well in a variety of indoor environments from a restaurant and retail store to even in a classroom setting! The bright colors will draw attention to your personalized message. When a new presentation is needed simply wipe away the writing with a damp cloth!