Good build and simple to use with benefit of indicator lights to determine battery capacity. It was a little heavier than I imagined but I have limited experience with these devices to would not suggest this is a major criticism
I ordered two and they were delivered in good time. Not the cheapest but not the most expensive. Regrettably both cables broke within a couple of uses. For one cable the connector to the iPhone was a very tight fit.
A great case for the price. Don't be tempted by cheaper versions which only hold your Kindle using flimsy elastic at the corners. This product holds the kindle securely and is robust a well as an attractive colour leather.