Lenovo ThinkPad Yoga 12.5" Touchscreen Laptop i7 256GB Signature Edition Rock-solid durability: A sturdy magnesium-alloy roll cage and heavy-duty, scratch- and smudge-resistant Corning Gorilla Glass display help the Yoga withstand heavy amounts of daily use and abuse. 1 year limited warranty. Innovative lift-and-lock keyboard: When switching your Yoga between modes, the keyboard frame automatically rises and the keys lock, eliminating accidental keystrokes and providing a more comfortable grip. Powerful Intel Core i7 processor: A fourth-generation Intel Core i7 processor delivers faster system performance, uses less power, and enables sharper graphics. Digitizer pen support: The included digitizer pen provides a natural and fluid writing experience for everything from jotting notes to annotating PDFs. It also conveniently stores inside the chassis when not in use. Windows 8.1 Pro: Windows 8.1 Pro includes everything in Windows 8.1, plus enhanced features that help you easily connect to corporate or school networks, manage your devices, access one PC from another, encrypt your data, and more.