Shenit Qi Standard Wireless Charger Power Mat Charging Pad for Google Nexus 4/Nokia Lumia 920 820 / HTC Droid DNA Butterfly / Samsung Galaxy S3/Note 2 (Receiver Needed) + Free Retractable Stylus Works with any Qi-enabled device through an adapter or an embedded chip Charging distance is 5mm support charging with most phone cases on the market Power Source: AC Adaptor plugs into charging pad Freedom of Placement: No annoying magnets to align or secret spots to find in order to charge your device For Samsung Galaxy S3/Note2, you need buy a QI wireless Receiver