Available at Amazon:
Get in the know with the Pandigital WikiReader. This palm-sized electronic encyclopedia contains the entire English Wikipedia covering 3 million topics -- equivalent to more than 1,000 volumes. No internet connection is required, it comes preloaded with the entire Wikipedia and is ready to use right out of the box. Easy touchscreen controls and touchscreen QWERTY keyboard allow you instant access to a world of knowledge. Never be out of date, either, as the content can be updated quarterly via online download or via MicroSD card. Runs on 2 AAA batteries which will last approximately 1 year.