This Fast Charge External Battery Pack with Dual USB Outputs Compatible with Smartphones, Tablets, etc.The solar power bank charges up 8-10 times for your phone and 3-4 times for your tablet, and it can be used for 9 days on average per charge.It comes with 4 high-performance solar panels that can reach 6W in direct sunlight to keep your phone up and running even in places without electricity.It a real solar power bank that fast charging by sunlight.