It has the feature of automatically sensing where your device is so that there is no "no-charging even though placed on mat" issue that some charges are having.
Here are a few youtube videos of the charger :
Unboxing Panasonic TM101
Nexus 4 on the charger
Demonstration of the auto-sensing feature
Apparently, the device is available for a cheaper rate from Amazon Japan, which ships only within Japan for 40$ [ compared to 50-55 USD in ebay w/o shipping].
Here are a few images that I could find :
NOTE: The image below shows the charger charging the first device which is placed on it. Because of the auto-sensing feature, you can't charge multiple devices at once.
Source : Reddit