It charged by iphone 6+ in the same amount of time a 2.0 charger, so I don't know why I bought the more expensive model

The Micro fitting fits where many of the cheaper models and some of the more expensive ones are loose and don't work well because of poor specs.

Also the V and Amp are correct on the power source where many cheap models and some more expensive models when plugged in say to use the correct charger.