Wall Outlet Extender: Expand 1 wall socket into a AC wall mounted surge protector(1080 Joules) with 2 grounded AC outlets plus 2 USB ports; fit over both GFCI and standard receptacles Portable Travel Charger: Compact size plug-in adapter only occupies 1 wall socket which is a nice outlet saver; ideal for smart phones, tablets, laptop, kitchen appliances and other electronic accessories. Wide spacing between outlets and USB ports allow you to charge up to 4 devices simultaneously; ideal for power adapters and bulky plugs Dual Smart USB Charging Ports: 5V 2.4A Shared rating; high-speed USB ports automatically detect charging devices and deliver optimal charging speed, up to 2.4A per port. Also your cell phone could be put on the top phone holder conveniently when charging