Are you looking for a solution so your smart phone lasts longer than it does? Here’s a solution to eliminate your frustration. Genius presents its latest product, the ECO-u200 power pack, which can charge your smart phone even when you use it. You can now use your smart phone without any worry about the battery life because ECO-u200 includes 2600mA capacity which can extend the battery life of your smart phone up to eleven hours. The sleek black cover is perfectly suitable with your smart phone.