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Pro Great 300 ppi screen
Kindle Paperwhite has a 6" 300 PPI screen. 300 PPI is currently the highest pixel density screen for ereaders.
Pro E-ink, anti-glare, and frontlight makes the screen completely optimised for reading
The Kindle PaperWhite is optimized for easy reading because of the e-ink display, anti glare, and built in frontlight.
Pro Battery life lasts multiple weeks with normal usage
If the Kindle PaperWhite is being used for one hour per day, it will last about one month from a single charge. This amount of battery life is considerably better than similar readers.
Pro Built in frontlight for easy reading in the dark
The built in frontlight allows for a book-like reading experience in the dark.
Pro Supports MOBI and PDF formats
Kindle Paperwhite supports regular PDF documents and MOBI files. MOBI is a popular ebook format which is becoming the standard for publishing.
Pro No glare in sunlight
The Kindle Paperwhite is designed to be useful even in bright sunlight.
Pro Direct access to Amazon
Amazon is currently the most popular e-book store - if you're a regular Amazon customer, it makes sense to use an e-book reader that works well with Amazon, to limit the hassle involved in getting books onto your device.
Pro Small enough to fit in a back pocket
The dimensions of the Kindle PaperWhite are 6.7 x 4.6 x 0.36 inches.
It might not be a Nokia, but it's pretty sturdy. I dropped mine, put it in my handbag next to keys and thrown it a few times and despite a few scratches, looks good
Pro Super responsive touchscreeen
Kindle PaperWhite's touchscreen is very responsive, which is not the norm for e readers.
Pro Can be jailbroken for extra features
Due to its popularity, the Kindle Paperwhite is a popular target for jailbreaking, which allows users to do things like change their screensavers.
Con Does not support the EPUB e-book format
Unfortunately, Amazon Kindle readers lack support for the EPUB file format.
Con Impossible to turn backlight completely off
While it may not be noticeable to all users the backlight can not actually be turned completely off, so in a dark room light will be able to be seen emanating from the screen.
Con Ad-free version costs $20 more
With "special offers" enabled, the Kindle Voyage displays an Amazon ad on the home screen at all times and displays an ad when the screen is turned off.
Though with a little prodding Amazons CS may move over a users special offers removal from an older device to the newer one.