The NanoBook is an ultra-mobile PC reference design by VIA Technologies, Inc. It has a clamshell form factor, a 7-inch 800×480 touchscreen display, and a full-size keyboard. It weighs less than 850 g (approximately 1.87 lb) and has a claimed battery life of up to 4.5 hours. It is based on the VIA VX700 chipset, featuring the VIA UniChrome Pro II IGP integrated graphics and powered by the 1.2-GHz VIA C7-M ultra low voltage processor.