Well I bought two sets. Each set comes with 4. The look amazing when they get a full charge from the sun. One issue is don't leave them out side when it rains. Guess they do not like the rain.  Must not be very water proof because we had rain and now one does not work. Very disappointing because of that. Only had them outside for three days. Guess I will be call customer service to try and get a new set or refund.