Unfortunately, I have a device that has three times now, no longer works for the shortest possible time and be constantly "hung". After the first complaint I get a new device and after half a year of trouble started again. I had to send it back and got it this time back repaired. I could still read less than two hours and then went nothing. The only positive thing is the Kobo customer service. Now I am waiting for my new machine and am curious how long this then to use ist.Keine buy recommendation!