The Paperwhite trades a phone's glowing LCD for a 7-inch glare-free e-paper display, built to be read in direct sunlight as easily as in bed at night. An adjustable warm light shifts the screen from cool white to amber, and 300 ppi keeps text sharp at any size setting.

It's waterproof to 2 meters, carries 16GB of storage — enough for thousands of books — and charges over USB-C, with battery life measured in weeks rather than hours. Nothing about it is trying to be a tablet.