The nook is an electronic book reader produced by Barnes & Noble and runs on the Android platform. The nook will compete with the Amazon Kindle, Sony Reader, and other readers. It is said to include Wi-Fi and AT&T 3G wireless connectivity, a six inch E Ink display, and a separate, smaller color touchscreen that serves as the primary input device. The device will also have a MicroSD slot for extra storage. The nook has a user replaceable battery and a memory card slot as well.