What's in the box: -ibattz Battstation Optimus 20400 mAh Battery Pack -Micro USB cable -30-pin iPhone and 30-pin Samsung connectors that plug into the micro USB end -Instruction manual The ibattz Battstation Optimus 20400 mAh Battery Pack is a power house that gave me a lot of power to charge my devices (I mean a lot!). It has 2 USB ports. One of the USB ports has a 2.1 amp output, for tablets, and the other USB port has a 1 amp output which is good for smartphones. The USB ports combined have a max output of 3.1 amps. The micro USB port is for charging the battery at 1.5 amps. This is a 20400mAh battery pack and can charge my iPhone 5 roughly 8-11 times. This battery pack is good for traveling and who wants to charge many devices many times on the go. I can see myself using this battery pack for going camping in the woods. I can use it to plug in my USB speakers and charge my iPhone 5 with it at the same time to play my music for a long time. I can also use it to plug in USB LED flashlights to light up my tent or room. I like that the fits comfortably in my hand without any slipping because of the matte feel. I am very impressed on how this battery performed. This is one of my favorite battery packs because of its massive capacity, portability and durability. This battery pack uses Panasonic automotive grade lithium ion battery cells. This battery pack has an LED flashlight which is good for simple tasks. The flashlight is not that bright but it works fine. The battery pack has a 4 LED power level system. 4 LED=100%-80%, 3 LED= 80%-60%, 2 LED= 60%-30% and 1 LED= less than 30%. When 1 LED is blinking, it means that the battery is dead. This is the largest battery pack I have currently. I have review over 30 battery packs and this one is the largest. Real results of the USB ports outputs using a USB power meter: -The 2.1 amp USB port charged my iPad Air at 2.01 amps at 91% -The 1 amp USB port charged my iPhone 5 at 0.93 amps at 76% Overall, this battery is a life saver and has great performance. I have a video on amazon. If anyone wants a link to it, I can PM it to you. I also posted this in the iPhone accessories since it can be used with both.