Multi plug extension: This USB Wall Plug features 4 grounded AC outlets, ideal for charging indoors without bulky extension cords. One adaptor for four devices, Max capacity up to 3250W(250V/13A). Indicator Light: The indicator light let you know the plug power is on or off. Space saving design: This USB Power Plug Adapter occupies only one outlet on your wall socket and make charging neat. Widely Used Extension Plug: The plug extender can use for multiple types of plug, such as UK, AU, US, and EU plugs; easy to fit into luggage and briefcases, suitable for travel and business trip; there is no cord for wall plug extender, making it fully cruise ship approved. Individual Switches: There is a switch for every AC outlet, can save energy and make your charging safer and more convenient. Adjustable Knob: Designed with the adjustable knob, which can extend 1.5cm to the wall, make it firmer when you plug your devices in. Warranty: we provide 12 months warranty for this product, please feel free to contact us if there is any problem with the product.