WikiReader from Openmoko is exactly that. A reader specialized to read an electronic local copy of wikipedia.
- Touch screen
- power: 2 AAA cells last up to a year.
- reflective screen - works in sunlight
- price: $99 US
- uses micro SD card
- updates: twice a year on micro-SD card for $29 per year.
- or download for free if you can deal with a 4+ Gigabyte download.
- Screen size: 240 x 208 pixels
- approximately 39 characters x 10-12 lines as shown.
- 3.5" diagonal 2.375" tall x 2.75" wide
- 8GB microSD card included.
- Power supply: Input Range 2.1 to 3.4 volts, 2 * AAA batteries.
- Processor Epson S1C33E07 Micro controller
- RAM: up to 32 MB
- Boot ROM: 64KB Flash
- Touch screen: Capacitive Touch Panel
- Three function keys
- Debug connector: 8 pads under a seal in the battery compartment