The wireless charger of Apple device has 5 watts and 75 watts of these two models, but the difference between the two models is very large, 75 watts of wireless fast charger is equipped with, no Apple wireless devices, can achieve the fastest charging efficiency, in a very short period of time can charge Apple mobile electronic devices is also very high price, and there is no way. Is a very common wireless charger, the overall configuration and price are very low, I hope my answer can help you.
The difference between the two is the speed of charging. Apple wireless charging 5 watts indicates that its charging range is 1a current, and Apple wireless charging 75 watts indicates that its transmission current is about 15 watts, obviously their charging speed is a fast or slow.