Never run out of battery again! The Span 1200 mAh Power Bank is ultra-portable and ready to keep your devices charged wherever you go. This powerful little guy features a 4.44Wh lithium-ion battery that can charge your smartphone, MP3 player, and many other devices. It even comes with a key ring for easy attachment to your bag or purse, and a USB-to-Micro-USB cable to get you started. With 5V/1A input and output, it's simple to use and TSA-approved for carry-on luggage (restrictions may apply). Note: please charge the power bank before first use.