Lenovo YOGA Book 1.44GHz x5-Z8550 10.1″ 1920 x 1200pixels Touchscreen Grey.On-Demand Halo Keyboard With Haptic Feedback â€” Makes Serious Work Easier. When you want to get serious work done, just open the Yoga Book in Type Mode and type away with the easy-to-use, Halo Keyboard. The Halo keyboard only shows up on demand, only when you need it. The software-optimized keyboard auto-completes and auto-corrects as you type. Its haptic feedback and keyboard shortcuts provide an experience thatâ€TMs like using a real keyboard, bringing the best of software and hardware into the smartest and thinnest keyboard yet. Use Real Pen to Draw Like a Real Pro . When artistic inspiration strikes, Yoga Book has you covered. When the keyboard is off, the Create Pad and Real Pen give you the precision and control you expect from a traditional pen on paper. Lenovo Paper App for Android, lets you write notes, doodle by hand â€” even when the Yoga Book is turned off. The OneNote app, available for the Windows version, syncs with OneNote via your Microsoft account, converting your printed or cursive handwriting into text. Slim, Light, with All-Day Battery Life â€” Unleash your Imagination, Anywhere. Only 0.18 inches (4.55 mm) thin when opened, weighing just 1.5 lbs (690 g), and with up to 12 hours of use on a single charge â€” the Yoga Book allows you to use your creativity wherever you are. Expect to turn heads when you unpack your Yoga Book. Its sleek, stylish design is crafted with a premium high-quality alloy of Aluminum (Al) and Magnesium (Mg). The Yoga Book with Android comes in a choice of Gunmetal Grey and Champagne Gold. The Yoga Book with Windows comes in black.