This is the one I got. It includes 2 USB cables, one about 5-6ft and a short 1ft cable, but not a wall adapter, though it works with the wall adapter that came with the phone. It's not very big, so if you have a thicker phone case you have to be careful to center it on the charger. It beeps if the phone isn't quite in the right spot which helps with placement in the dark. I've had it since June with no issues.
Also, you may already have one, but don't forget you need an adapter so the phone will work with Qi. I got this one. Even though it says i9300, it works with my SCH-i535.