As known to most is consumed a lot of power and GPS so keep most phones only a few hours by. With this device, these worries are forgotten. It comes with a bag for protection, a USB cable and the adapter for "older" Apple products and Samsung Tablets. A battery charger is not included. I therefore recommend this to acquire the more significant as the loading on the USB port on the computer takes a long time. Once charged, the perseverance of the batteries is enormous. I have tested it with the iPhone 4, iPad 2, Samsung Galaxy S2 and the Kindle, where everything worked smoothly. Even after several drops from my pocket (I admit I'm a bit clumsy) the unit runs perfectly. For Ingress player a battery pack is essential and this one is absolutely top. The flashlight is a nice feature if you take playing at night. Furthermore, you can the battery via a long press on the knob and turn. Even if he is on, he does not discharge when no consumption device is connected. Here a strong buy recommendation for anyone looking for a battery pack at a fair price.