So where do I start? Its an AMAZING portable charger!!! I just did a speed test for each port, One being the 3.0 Quick Charge and the other being the Standard USB port… Both are really good!! The 3.0 port was 20 seconds faster so that felt good to see!! Durability wise, I dont know much but the build quality is very put together (meaning it doesnt feel loose or theres anything moving its all nice and tight) also has a little weight which has a nice feel to it! Its exactly as wide as my iPhone 6 Plus just a centimeter taller if that… Overall I love this product and I have been waiting to get this product for so long and I still cant believe I finally can skate around town with nothing to worry about, I can keep my phone charged all the time and keep filming!! #ANKER #ThankYouSoMuch Have a nice day whoevers reading this 
