Sure, you need to have a phone. Personally, I have iPhone 5S and since the time when I upload there tons of audio books I stopped to carry my Kindle for reading when I was waiting on the top for a better conditions. You can have the audio books in every phone with Android, naturally. iPhone 5S weights 112 g and the charger works with a GPS and a camera too. When you are waiting for weather conditions you can charge too.