When the box came I thought there were maybe 2 solar panel lights inside. However, there were 4 inside but they were smaller than I expected. The solar panel lights were easy to install. They come with a double sided sticker to hold them in place as well as a screw. Once installed you have to remove the plastic cover over the solar panel, cover it with your hand, then press the button for the lights to turn on. There are 3 different settings; high light, low light and motion sensor. The motion sensor setting did not work for me but I chose the high light setting so they stay lit up. It's not real bright but with all 4 together gives a decent amount of light and it's not disturbing.