Product is light weight yet very strong and looks sleek and modern. Once the app is installed on your phone, there is a heap of extra information and things you can do that go beyond just weighing yourself. Having said that though, all I wanted was a digital scale so I don't bother with the app; perhaps later on I may. The information booklet does not really mention how to charge the scale; it just says do it. The scale comes with a mobile phone cord so it is obvious that you can plug it into your computer's usb port OR for a faster charge, use the ac phone charger. They have a usb port and this can also be used to charge the scale via a power point.