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An optimized form factor
The Cybooks dimensions are very close to the ones of a paperback. As a paperback, the Cybooks can be easily arranged in a hand bag or a purse. The Cybooks are even much thinner (-70%) than a standard paperback and is thus easily transportable.

Thin and light
Thanks to its 1mm thick screen and its tiny Lithium Polymer battery, the Cybooks offer a wide reading surface within an incredibly thin and light design.
Paperback Cybook Gen 3 Cybook Opus
7.9" x 5.1" x 1.1"
11.2 ounces

200 x 130 x 28 mm
317 g 		7.4" x 4.7" x 0.3"
6.13 ounces

188 x 118 x 8.5 mm
174 g 		6" x 4.2" x 0.4"
5.3 ounces

155 x 108 x 10 mm
150 g
An impressive battery lifetime
The ePaper screen technology requires no power to maintain an image, as long as the Cybooks display the same image, there is no power consumption. This technology drastically reduces power needs. Thus, the Cybooks offer an impressive battery lifetime of 8,000 screen refreshes with a full charged battery. Look at the following table to see how long you can use your Cybook on a full charge.
(* These figures are theoretical, actual battery life may vary upon usage. Please consult "How does the Cybook battery work?" from the FAQ to understand more precisely battery operation)
Casual reader Average reader Heavy reader
80
refreshes/day 		160 refreshes/day 320 refreshes/day
100 days
3 months 		50 days
1 to 2 months 		25 days
3 weeks
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