To me, this is one of those simple inventions/products that I really like. I purchased several and use them, especially when I want to charge my smart phone. The charger usb cord that came with the phone is too short to allow me to keep my phone on my desk at work while charging the phone. the outlet nearest my desk is already stuffed with power cords, so I can plug in my charger in another outlet and this extension cable lets it reach my desk in the place I want to have the phone.