The INGS Ebook Lumina 4004 e-book reader has a well-thought-out design. The case with beveled lower corners provides grooves on the back panel for a secure grip, making it almost impossible to accidentally drop the device. E-Ink technology displays a picture on a 6-inch display similar to a sheet of real paper. On such a screen, you can read books for hours on end without experiencing discomfort. The INGS Ebook Lumina 4004 e-book reader is controlled both by the touch screen and by the keys on the case. The device has a backlight system with an adjustable color temperature, thanks to which you can read before bedtime without harm to your eyes. It is implemented on the principle of a flashlight and illuminates the display along its perimeter, without irritating your eyesight. Provided that you read two to three hours a day without backlighting, the e-reader’s battery will only need to be charged once every two months.