Description Go Green EZ Boost Portable Mobile Charger Compatible with smart phones, gaming devices,PDAs, digital cameras, eReaders. 5X more powerful that 2AA chargers with Superior performance; 16.5 watt hours. Compatible with a number of devices that use a standard USB cable such as smartphones, gaming devices, MP3/MP4s, PDAs, digital cameras, and e readers. Includes 6AA batteries, 18" USB to micro cable