Have the ebook now for three months and have already what 'gone through' with a little bit! For the 'normal' use reading it is quite good to use when one expects that the software itself from time to time 'frestfrisst' and you have to fix the problem with the 10-second pressing the power button. The applicable Explorer is very good for managing the page selection on the 'Go-to' function a bit awkward, especially because the direction keys of the ebooks are a bit small due to the compact overall design of the device. The brightness of the monitor can be adjusted in several stages, but has itself with the level 0 still quite bright setting. Music Listening I have about not tested because I have the ebook for it not purchased and therefore can not say anything to the timbre. The ebook has a handy tilt circuit which does quite well when images-esteem. To read you should turn it off sooner. When turning the ebook for the first time, you should incidentally write the software version in the settings because it can happen that the software itself so stipulates that itself does not help the 10-second pressure and to the software of the manufacturer page must download the 'revival'. This is the way to extend the battery life, which is currently drags me to a total of about 9 hours of reading time. I do not have big Verlgeichsmöglichkeiten, me however is not sooooo super long ago, as it is advertised. Last but not least I would like to refer to the ability to use a micro SDHC card, which I finally tackled. However, I was very disappointed with how slowly the ebook is when accessing the card and to load data from it. The machine is much faster with access to the own memory (for the 2 GB). So an experienced electronics user, I can only advise against the device! For the casual reader, it is a low-cost version of eBook reading pleasure, if you have nerves of steel and a basic idea of problem solving in software ticks.