The Lenovo IdeaPad Yoga 2 Pro is an Ultrabook-class convertible device that can be used as both a tablet and laptop computer.Lenovo unveiled the Yoga 2 Pro at the 2013 IFA in Berlin, Germany. It went on sale in the US in October 2013 at a starting price of $1,100 US dollars. It comes in two colors, silver gray and clementine orange, and is designed for flexibility—allowing the user to use it in a variety of situations. Because of the durable hinge that allows the screen to swivel 360 degrees, the Yoga 2 Pro is able to fully utilize windows 8 and its emphasis on touchscreen integration. The Yoga 2 Pro is the first laptop to earn a Green Mark certification from TUV that recognizes Lenovo for environmentally friendly manufacturing processes, and low energy consumption.