Onyx Boox is gearing up to launch the Picco, a pocket-sized e-reader featuring a 3.97-inch front-lit display. What Is the Boox Picco? For context, a standard Kindle Paperwhite has a 6.8-inch display, while the Picco’s 3.97-inch screen is roughly the size of an older iPhone display. Unlike Kindle, Boox devices run full Android, allowing users to install apps like Libby, Kindle, and Kobo on the same device. If Boox prices the Picco similar to its larger devices, that could change the value proposition.