GJX 7" Portable E-book Reader, 8GB Memory, Built-in Lithium Battery, Long Endurance Time, Compact Size

Built-in 2100mAh large capacity lithium battery, long endurance time. You can set a time span for your eReader to auto page while reading. You can set a time span for your eReader to auto page while reading. The TF card slot allows you to insert a TF card, offering more reading options and delivering smooth reading. 7-inch screen size allows you to hold it with one hand, easy to carry, and you can enjoy comfortable reading anytime and anywhere.