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The black 24-Hour Power System from Duracell is a suite of accessories that allow you to keep your portable devices powered around the clock. The kit includes a Wireless Case for your iPhone 4/4S, a Powermat that charges up to two devices, and a Portable Backup Battery.
To start, plug in the Powermat and attach the case to your phone. For everyday use, simply set the Portable Backup Battery and case on the Powermat to charge. You'll hear a "bleep" to let you know it's charging. To power up your device(s), all you have to do is set them down -- whether you're at home, at the office, or on a Wireless Charging Hot Spot. Or, you can take your Portable Backup Battery to charge when you're on-the-go.
Keep your portable devices powered around the clock
Plug in the Powermat, attach the case to your phone and set the Portable Backup Battery and case on the Powermat to charge
An audible "bleep" lets you know your device is charging
Take your Portable Backup Battery to charge when you're on-the-go