* Duracell Powermat for 2 Devices: A stylish charging mat you simply set up once at your home or office and wirelessly charge your enabled devices. * Wireless Case for Samsung Galaxy S III: A protective case for daily use that enables wireless charging for your Samsung on any Powermat. * Power On The Go Backup Battery: Gives you instant access to power wherever you are, and up to a full charge for your divece. * Universal Power Supply for the Powermat (100-240V AC) and Owner's Manual. How It Works Initial Setup * Plug in the Powermat to set up a wireless charging station * Slide your Samsung into the protective Wireless Case * Place your newly enabled Samsung and Power On The Go Backup Battery on the Powermat to charge Daily Use Now that you’re set up, you can enjoy the ease of wireless charging—-just drop and charge your enabled Samsung and Power On The Go Backup Battery on any Powermat. And, if you need power while out and about, just connect your Samsung to your Power On The Go Backup Battery for up to a full charge anytime, anywhere. Compatible with iPhone 4/4S, Samsung Galaxy S III, and Kyocera Duraforce 8.8 x 3.1 x 6.2 1.2lbs Model#: ‎CSG3W2 I have two available, one is without a box.