This is a two-sided sign which has its content lit from within, so each side is backlit. The content of the sign is up to you!
The LEDs inside are smarter than that calculator you had in high school, so they can be programmed to show all kinds of color patterns (like pride flags, or a fire animation, or maybe your favorite country's flag? up to you) - There can even be a bank of animations programmed in that operate in sequence, randomly, or honestly you have no idea how many possibilities there are with the LEDs so just email me
It doesn't have to be mirrored, as the one in the picture - you could have two totally different signs!