I love the product especially when you can get it for less than $200. I bought it when there was a discount on Amazon. It's rated at 120 watts and I figured I wouldn't get more than 20% efficiency, but in full sun I can easily get 60-65 watts. I used it to charge my portable power station when I go camping. All in all, this purchase is highly recommended if you are camping or interested in teaching your kids about solar energy.