2 weeks Battery Life reader @ readersinfo

amazon kindle 2 (2009-02-10)
Kindle AZW format, the Kindle 2 reads also TXT, Audible (formats 4, Audible Enhanced (AAX), MP3, unprotected MOBI, PRC natively; PDF, HTML, DOC, JPEG, GIF, PNG, BMP through conversion. 20% faster page turns than original Kindle, integrated HSDPA modem (3G) with a fallback to EDGE/GPRS for 3G connectivity, wispernet, get books delivered wirelessly in less than 60 seconds; no PC required, Kindle Store, Text-to-speech, Built-In Dictionary with Instant Lookup.
- Linux, Freescale 532 MHz, ARM-11 90 nm processor, 32MB main memory, 2 GB moviNAND flash storage - USB 2.0 port (micro-B connector) for charging and sync, 3.5mm stereo jack - 6-inch E-Ink electronic paper display - 600 x 800 resolution at 167 ppi, 16-level gray scale - 3.7 V 1530 mAh lithium polymer battery, U.S. power adapter (supports 100V-240V)Now read for up to 1 week on a single charge with wireless on, a significant improvement from the previous battery life of 4 days - 2GB internal (approximately 1.4GB available for user content) , 1,500 titles - - - 8" x 5.3" x 0.36" - 10.2 ounces (289.2 grams) - - - .

Resources: http://www.amazon.com/Kindle-Wireless-Reading-Display-Generation/dp/B0015T963C/ref=sr_1_3?ie=UTF8&s=fiona-hardware&qid=1264092223&sr=1-3

amazon kindle DX (May 6, 2009)
The 9.7-inch ebook is designed for newspaper and college student textbooks., 3G wireless, Holds up to 1,500 books , up to 1 week on a single charge with wireless on, Built-In PDF Reader, Read-to-Me Text-to-Speech feature, Kindle (AZW), PDF, TXT, Audible (formats 4, Audible Enhanced (AAX)), MP3, unprotected MOBI, PRC natively; HTML, DOC, RTF, JPEG, GIF, PNG, BMP through conversion, Built-in Dictionary, It is the first Kindle model with an accelerometer, automatically rotating pages between landscape and portrait orientations if the device is turned on its side.
- Linux - USB 2.0 (micro-USB connector), 3.5mm stereo audio jack, built-in stereo speakers - 9.7" (24.6 cm) diagonal E Ink® electronic paper display - 1200 x 824 pixel resolution at 150 ppi, 16-level gray scale - Rechargeable Lithium Polymer battery, power adaptera single charge for up to 4 days with wireless on - 4GB internal (approximately 3.3GB available for user content), 3,500 titles - - - 10.4" x 7.2" x 0.38" - 18.9 ounces - - - .
Resources: http://www.amazon.com/Kindle-Wireless-Reading-Display-Generation/dp/B0015T963C/ref=sr_1_3?ie=UTF8&s=fiona-hardware&qid=1264092223&sr=1-3

Astak 5" EZ Reader Pocket PRO
Faster response and page turns, Support 20+ open formats: ADE(Adobe Digital Edition), PDF, TXT, PDB, DOC, HTML, FB2, LIT, MP3, EPUB, WOL, CHM, PPT, TIF, PNG, GIF, RAR, ZIP, DJVU, JPG, BMP, font increase 3 sizes+, fast page turns, rotating display (not available on certain file formats), PDF reflow, text-to-speech, Text zoom, Internal MP3 Player.
- Linux OS - USB2.0, thumbwheel - ePaper 5 inches - 600x800 pixel 8-level grayscale - 3.7V Li-Polymer battery 1000mAh - internal flash memory 512MB - SD card slot (support up to 16GB) - English, Spanish, Chinese & more - 6"(L) x 4.1"(W) x 0.4"(H) - 6 oz (including battery) - storage temperature -4F~131F, operating temperature: 32F~104F - - .
Resources: http://www.theezreader.com/

Astak 6" EZ Reader
Samsung Arm9 200MHz processor, Support 20+ open formats: ADE(Adobe Digital Edition(, PDF, TXT, PDB, DOC, HTML, FB2, LIT, MP3, EPUB, WOL, CHM, PPT, TIF, PNG, GIF, RAR, ZIP, DJVU, JPG, BMP, font increase 3 sizes+, fast page turns, rotating display (not available on certain file formats), PDF reflow, text zoom in 3 sizes, Shortcut keys, Onboard MP3 player, shortcut keys.
- Linux - USB 1.1, 3.5mm stereo audio jack for headset - ePaper 6 inches 600x800 pixel 4-level grayscale - - replaceable battery 3.7V Li-ION 950mAh - NAND Flash internal flash memory 512MB - SD card slot (support up to 4GB) - English, Spanish, Chinese & more - 7.2"(L) x 4.7"(W) x 0.4"(H) - 7.8 oz (including battery) - storage temperature -4ºF~131ºF, operating temperature: 32ºF~104ºF - - .
Resources: http://www.theezreader.com/

Interead COOL-ER (2009-6)
Manufacturer: PVI, no wireless, supported formats: PDF, EPUB, FB2, RTF, TXT, HTML, PRC, JPG AND MP3, Content: , DRM: PDF. EPUB, COOLER-EBOOKS estore titles: Over a million, Page Orientation: Easy Switch Landscape/Portrait Options, slow response time, difficulty supporting variety of formats, dlicky navigation, Windows PC and Mac compatible, COOL-ER Colour: 8 Options.
- Linux, Samsung® S3C2440 ARM 400MHz, 128 MB RAM - - 6" E-Ink® Vizplex No Touchscreen - DPI: 170 ppi, 8 Levels of Greyscale - Li-Polymer battery (1000 mAh)One charge lasts for over 8000 page-turns - 1GB internal - SD (up to 4GB) - English, German, French, Spanish, Portuguese, Russian, Traditional Chinese, Simplified Chinese - 183 x 117.74 x 10.89mm (Excluding Case) - 178g - - - .
Resources: http://www.coolreaders.com/ http://www.cooler-ebooks.com/

Sony Reader PRS-505 (2008-08)
The battery can last for about 2 weeks, or 7,500 continuous page turns, compatible with the Sony eBook Store, supported formats: PDF, RTF, TXT, BBeB, Word, JPEG, GIF, PNG, BMP, MP3, AAC7.
- MontaVista Linux - USB port 2.0 - E Ink® "Electronic Paper" 15.5 cm (6 in) diagonal - 600 x 800 pixels effective 584 x 754 pixels, 170 dpi, 8-level gray scale - Lithium-ion battery, Optional AC Charger requires 120 Volts 60Hzup to 6800 "page turns" per charge, Approx. 4 Hours with USB charging from powered Computer or Approx. 2 Hours when using optional AC wall charger - 256 MB standard (200 MB Accessible) stores up to 160 titles - Sony Memory Stick Pro Duo 8 GB, SD card up to 2 GB (some non-SDHC 4GB cards may work), or up to 32 GB with SDHC cards - English - 175 x 122 x 8 mm (6.9" x 4.8" x 0.3") - 250 g (9 oz) - - - .
Resources: http://www.sonystyle.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10551&storeId=10151&productId=8198552921665245739&langId=-1

Sony Reader Touch Edition™ PRS600 (2009-8)
Processor: i.MX31L (TO 2.0.1), Access to over 1 million public domain books from Google Books, Ability to borrow eBooks from libraries, Supports ePub open format, bookmark, touchscreen keyboard text entry, freehand notes with stylus, Page Zoom, 5 levels Adjustable font sizes, TXT, RTF, DOC, MP3, AAC, JPEG, PNG, GIF, BMP, built-in dictionary.
- MontaVista Linux - - 6" E-INK Vizplex Full Touch screen - 800 x 600 pixels, 8-levels gray scale - Rechargeable Lithium-Ion, DC 3.7 V, AC Adaptor: AC-S5220E, Power DC 5.2 V a single charge: 14 days, 7,500 (BBeB Book)Continuous page turns, 6,800 (EPUB) Continuous page turns - User Available Internal Memory 380MB - MemoryStick® PRO Duo™ (support up to 16GB) & SD Card memory slot (support up to 16GB) - English & French - 6.9 x 4.8 x .4 inches (LxWxD) - Approx. 10.1 oz - Operating Temperature: 41º to 95ºF - - .
Resources: http://www.sonystyle.ca/commerce/servlet/ProductDetailDisplay?storeId=10001&langId=-1&catalogId=10001&productId=1006705&navigationPath=n100431 http://canadacomputers.com/index.php?do=ShowProduct&cmd=pd&pid=028626&cid=ETN

Sony Reader Touch Edition™ PRS700BC (2009-8)
Built-in LED reading light, bookmark, touchscreen, keyboard text entry, freehand notes with stylus, Page Zoom, 5 levels Adjustable font sizes, BBeB Book (Marlin), ePub, JPEG, GIF, PNG, BMP, MP3, AAC7, BBeB, ePub, TXT, RTF, Adobe® PDF10, Microsoft® Word, According to Sony's website, this item is no longer available for purchase..
- MontaVista Linux - USB 2.0 - 6" (15.5 cm) E-INK Vizplex Full Touch screen, back light - 800 x 600 pixels, 8-levels gray scale, 170 ppi - rechargeable Lithium-Ion, DC 3.7 V, AC Adaptor: AC-S5220E, Power DC 5.2 V a single charge: 14 days,Up to 7,500 continuous page turns (or up to two weeks worth of reading) - 512 MB - MemoryStick® PRO Duo™ (support up to 16GB) & SD Card memory slot (support up to 16GB) - English & French - 174.3 x 127.6 x 9.7 mm (6 7/9" x 5 1/9" x 0.4") - Approx. 10.1 oz 283.5 g - Operating Temperature: 41º to 95ºF - - .
Resources: http://www.sonystyle.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10551&storeId=10151&langId=-1&productId=8198552921665562069#features