The Nokia N90 is a smartphone, announced as part of Nokia's new line of multimedia devices, Nseries, on April 27, 2005. It had a unique swivel design encompassing four 'modes'. It has two displays and has a camera with Carl Zeiss optics and integrated flash, and can record video with audio. The screen can be swiveled 270° to let the phone be handled more like a conventional video camera. The camera lens can also be swiveled. The phone has no vibration feature. The 2.1-inch display has a pixel density of 259 ppi, which made it incredibly sharp and the crispest Nokia screen at the time, and continued to be joint-highest with the N80, E60 and E70 for a remarkable five years, before being beaten by the Nokia 5250 in 2010. The Nokia N90 can print with some printers over USB or over Bluetooth.