The pictures and ad copy really don't do this thing justice. When I bought it, I thought I was just getting a wireless charger with the standard spring loaded clamps on the side.
But no! It has a motor which clamps automatically onto your phone when you place it in the cradle. From there, it starts charging wirelessly. So you turn on your car, drop your phone in this thing and boom, it does everything you want with no plugging in, no tightening the cradle arms from the side, etc. I sometimes wish I had it when I'm not in my car charging my phone with a cable.