I've had a PocketBook reader five times in the past. PocketBook stopped working for me because of the under-tuned software and slow responses. So I switched to the Onyx Boox brand. I first bought an Onyx Boox Poke 2 and had that for 4 years. Beautiful , 6 inch compact ebook reader but with a black and white display only. Now the new Onyx Boox Go 7 Color is out. I got the white one. The reader is beautifully compact, very easy to hold in the hands, the back of the reader is slightly rough, so the reader does not slip in your hands. The display of the Kaleido 3 is really famous and sharp. The display resolution is Full HD, 300 dpi in black and white, 150 dpi in colour. With the naked eye, you can no longer see the individual pixels and the grid of the color display that is above the black and white display, as with the original, primary, Kaleido display that the PocketBook 633 had - I also bought that once, as the last of the PocketBook line, and after 2 hours of trying it out, I went to return it just because of the really terrible color display. But this reader is really beautiful, sharp, soft, contrasting and beautifully colored. Of course, the reader allows all possible settings of the display and colors, as well as dpi resolution and in individual applications. I forgot to mention that the reader runs on Android 12. So just log into Google Play and you can download your favourite programs or games that work beautifully on the display. Of course, this device is primarily an e-book reader. Not a device for playing games and watching videos. While the reader can and does allow gaming and video watching, it's still primarily an e-reader. books and texts. The reader has its own speaker, which is pretty decent and loud. You can listen to your favourite music or have your books, texts read aloud. The reader allows auto rotation of the display, which is very addictive and the reader does it very nimbly and quickly. The only thing I could fault Onyx Boox over Pocketbook is the el. books. Understandably, the reader has its own library, but it's not as intuitive as PocketBook's. This is perhaps the only minor disadvantage that is easy to get used to. Otherwise, all are absolute pros and advantages over other readers on the market. By having the reader on Android, you can install apps that allow you to borrow books from libraries. By having the reader on Android, you can install apps that allow you to borrow books from libraries. You can also install apps like Kindl, PocketBook and others where you have your account and your favorite eBooks. The reader has 64 GB of internal memory and also has an SD card slot. You can also connect the reader to your computer with a cable. The reader has 4GB of RAM and is powered by a 2.4GHz octa-core processor. Everything runs very smoothly and smoothly. What to say in conclusion? Is this the best reader for the "pocket"? I guess so. I highly recommend it.