Wireless charging, like the Qi charging many Android phones use, isn't new technology. My Panasonic electric razor used it many years ago, and most of us have seen toothbrushes that charge wirelessly in a cradle. And of course, we can't forget Palm and the way they brought wireless charging (though a different standard) to the masses with the Touchstone . Now that size, cost, and efficiency constraints have all eased up a little, putting wireless charging in something like your Android phone or watch makes more sense.
Wireless charging isn't magic — you still need a wire. the difference is that the wire is connected to a charging base instead of your phone, so you can just drop your Android onto the charger and things get to work without hooking anything up to your phone. The charging base can be almost any shape or size, and can even be in something like your car dash or the base of a lamp from IKEA. As long as you're able to get the right spot on the rear of your Android on the right spot on the base of the charger, it will work.