E-readers are portable electronic devices designed primarily for reading digital books, magazines, and other written content. They use a special screen technology called E Ink, which mimics the appearance of paper, making it easy on the eyes and readable in bright light. Popular models include the Amazon Kindle and Kobo. These devices often come with features like adjustable font sizes, built-in dictionaries, and the ability to store thousands of books. Many e-readers also offer access to online bookstores, allowing users to purchase and download content directly. This convenience has made e-readers a popular choice for avid readers.