We purchased this because my husband I both have android smart phones and were trying to figure out how we would make it through a day at Walt Disney World. Well it has also helped us get through  little leauge baseball games and family gatherings. I get a lot of qustions on it when they see the cord from my phone going into my purse. You can get 4 charges out of it before you have to charge it again. I does take a while to recharge but if you do it while you sleep you'll never know. Great way to get you from one bar to almost charged anywhere. I recomend this product to alot of people!! If you have a smart phone you need this!!