Despite these benefits, e-books also have some drawbacks for readers, including eyestrain and reliance on electricity., Firstly, the blue light emitted from many devices can have a negative impact on eyesight, , and readers sometimes strain to read text on small screens., Secondly, reading an e-book requires the use of an electronic device, which requires electricity for recharging., If readers are away from a power source for an extended period of time, , they may run out of battery and be unable to access their reading materials..

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