Now you can talk longer, listen to more music, play more games, watch more videos without worrying about running out of battery life. Use the Power Packs to charge a wide range of devices such as iPhones, iPods, eReaders and micro-USB charged phones or wireless Bluetooth headsets. Lightweight and slim form factor makes it convenient to carry in case of the need for emergency power making them ideal for business or leisure travel, road trips, outdoor excursions and more. Now you can talk longer, listen to more music, play more games, watch more videos without worrying about running out of battery life - if you run low on power just plug in the Dual USB Power Pack and keep going. A full charge can add up to 250% iPhone* charge, or similar for other Smartphones with an average 1400mAh battery, providing a great solution for those times you need additional battery life for your iPad, Tablet, Smartphone, eReader or other devices. Power x 2 - Dual-USB Ports! Need to charge an eReader and a Smartphone? Go ahead, the Dual USB Power Pack allows you to charge a Kindle or Nook simultaneously with another device such as an iPhone. With 2 x USB charging ports you get the added convenience and flexibility of being able to charge multiple devices when needed. Universal Power - Charge it all! With a 5200mAh lithium-ion battery, the Dual USB Power Pack supports charging a wide range of devices such as iPad, Samsung Galaxy Tablet, Google Nexus 7, iPhone, iPod, and micro-USB charged Smartphones or wireless Bluetooth headsets.;USB Charging Cable Included: USB cable to charge the power pack and also charge a micro-USB based device is included. For iPhone/iPod just use the data cable you received with your phone to also charge with the Dual USB Power Pack. Use the push-on/ auto-off button to switch on the device and the LED power status indicator to gauge how much charge is available. *Based on iPhone 4s & iPhone5. Use time will vary with device being charged.