Have you noticed the amazing number of chargers that you put in your luggage for each trip? Me is simple: between the smartphone, the tablet, bluetooth speaker, GPS, Bluetooth headset, GoPro, and my 2 backup batteries, I had come to a complete kit to take with chargers !
This charger 7 USB ports blithely replaces all these individual chargers save space and significant weight. It can charge up to 7 devices simultaneously, at full speed, please.
There remains the problem of cables, but that's another story!