The iTorch by New Trent (New Trent iTorch IMP52D 5200mAh External Battery Charger) is an amazingly portable external battery which can charge most (if not ALL?) of your mobile on-the-go USB chargeable devices. As a road warrior who's always going, sometimes by foot, sometimes by plane, sometimes by public transit, and sometimes by car, it's always useful to have extra power with you on the go. When you're on the road and don't have access to a wall or car charger, or when you just need to be on the move, the iTorch is perfect. I've been a long-time user of the New Trent Power Pack (Model IMP500), but believe you can never have too much power, especially when others are always asking for a boost. I love both New Trent products, and my old device has saved my butt on more than one occasion. What I really like about the iTorch in particular is the added bonus of the laser pointer and flashlight. It may sound silly, but it's already come in handy several times. I try to minimize the clutter in my bag and therefore never have a flashlight on hand. There are times, however, when a little light can go a long way. As a professional, a laser pointer for presentations is great too, and not one that takes little expensive watch batteries. BUT, to focus on it's main purpose, the iTorch is compact, portable, and easy to handle. I utilized it last weekend and managed to go from Friday morning to Sunday night without ever needing to plug my iPhone 5 into a wall; I made it most of Friday on my initial charge, and added two days of typical use using the backup external portable battery. I could have gone longer. The iTorch is not the most powerful external battery, but it's also not the heaviest! This thing is light weight! While there are other products that might go further, this little guy can give you the boost you need (for your iPhone, iPod, iPad, Camera, Bluetooth, etc.). Note the iTorch does NOT come with a wall-wart to plug it in to recharge, BUT, it charges off a standard micro USB. I was please to find out the iTorch can charge off the plug and cable I use to charge my second generation Amazon Kindle and several other devices that use micro USB (one less charger to add to my collect). Sleek to handle and easy to use, it's a great investment to have on hand and will pay for itself the first time you can fully charge your phone while rushing in a cab to the airport, or even during a flight to an important business meeting. Now that I rely on my mobile tech for everything, I never go anywhere without a battery backup!