We can turn on and off the lights. Each additional click will change the color of the lighting. The unit has 7 colors and will switch to random colors once the unit has completed it's first cycle. In order to erase the picture use a soft cloth, if the image is difficult to erase use a damp cloth. Clean gently and carefully to avoid the scratching the glow pad. The glow pad markers are to be used glow pad only. After finishing drawing should recap the marker. Battery not included but we have to insert the same.