Cool knight Multi-fonction 4-port USB Wall Charger/travel Charger with Interchangeable Plugs (Us, Uk, Eu, Au) for Iphone Ipod and Other Smartphone, Tablet, Mp3 Devices Etc White Color Shell thick and solid, effectively prevent broken or crushed IC smart and built-in fuse, double protection. Smart chip tested temperature, over current, overload, short circuit protection and load normal restore automatically. If force majeure circumstances, fuse fusing, automatically interrupts the current flowing in time, protect the security of the machine 4-Port USB Travel Charger,with 4 interchangeable wall plugs: US, UK, EU and AU Quality assured,Use more safe Small size,easy to carry