Latest color screen The e-reader features the latest E Ink Kaleido™ 3 color screen, with an impressive 50% increase in color e-page resolution and PPI. Big and eye-safe screen The 7.8-inch color screen remains totally eye-safe and glare-free, perfect for any content: regular books, manga, comics, and textbooks. SMARTlight & Dark mode Enjoy eye-friendly reading anytime! Use SMARTlight to choose a warm or cool tone for the screen or invert text and background colors with Dark mode. Speaker and Bluetooth Use a built-in speaker to dive into audiobooks anytime, with no extra devices needed, or pair the e-reader with other devices via Bluetooth 5.0.