Mobread says:
First, specifications of parameters
Availability: May 2009
Size: 151.2mm (length) × 105mm (width) × 10mm (H)
Main screen: 5-inch electronic paper display (E-Ink technology), 8 gray
Memory: SDRAM: 512MB, built-in 2MB NOR FLASH
Weight: about 160g
Power: built-in Li-ion 1000 mAh
Communications: A. headphones C. SD card slot interface B.USB1.1
Expansion: the largest 16G SD Card
Operating temperature: 0 ℃ ~ 40 ℃
Storage Temperature: -20 ℃ ~ 55 ℃ (non-rechargeable batteries)
Supported formats: txt, pdf, doc, chm, wol, rar, zip, jpg, bmp, tiff, fb2, djvu, gif (static), epub, html, htm, ppt, prc, mbi, pdb, MP3, etc.
CPU: Samsung Arm9 200Mhz
Operating System: Linux OS
Accessories: charger, data cable, SIM card, headphones, lanyard, a battery, 1G SD card
The eight shades of grey sounds good to me (BeBook 1 had four). But, the battery is listed as "built-in". Does that mean it's not replaceable?