E-book readers are portable electronic devices designed specifically for reading digital books, known as e-books. They use e-ink technology, which mimics the appearance of printed paper, making it easy on the eyes and reducing glare. Popular models include the Amazon Kindle and Kobo, which allow users to store thousands of books in a lightweight format. These devices often come with features like adjustable font sizes, built-in dictionaries, and the ability to highlight text. Many e-book readers also offer access to online bookstores, enabling users to purchase and download books directly. This convenience has made reading more accessible to a wider audience.