designer's own words:The idea is to transform the cork board to the wall or table light. I use the led inside the new design push pin with 2 pins (negative and positive voltage). The design of the board is compound from 2 layers, when you pressed the push pin, the 1st pin come to 1st layer of a' board (+), and 2nd pin to the 2nd layer (-). The light is on. The power of light is changing from amount of push pins, more push pins– more light power. The board light is absolutely mobile because of use AAA x3 battery power, in the back of the board. The Cork board light is very functional in home or office use. The size is 15 x 24in.