The Solar JOOS Orange gives you power anywhere without the compromises of other portable solar chargers. It's tough: Super durable and waterproof, it reliably delivers power where and when you need it. The JOOS Orange works in real-world light conditions (low light, in the shade and even light rain). It works fast: Charges at least 3.5x faster than any other portable solar charger. The JOOS Orange performs best under the sun and the large 5,400mAh replaceable battery pack holds enough energy to charge your smart phone several times and can even charge an iPhone about two and a half times.