It runs Android, has a 10.1-inch touchscreen, and a software keyboard. Yet the Lenovo Yoga Book isn't exactly a tablet. Instead, it's a hybrid computing device, folding along its hinge to transform with ease. In tablet mode it acts just as you'd expect, while unfolding just a bit allows it to stand up, becoming a mini TV. Keep going and you'll be in laptop mode, where the Halo haptic keyboard magically appears, and folding it completely flat will put you in note saver mode, which lets you write on real paper, yet automatically transfers every scribble over the companion note app. With an Intel Atom processor, it's got plenty of grunt, and it's more rugged than it looks, with an aluminum and magnesium build available in a gray or gold finish.