Lenovo made a unique device with the new Yoga Book. I like to describe it as a device the size of a netbook with the design of a convertible and the attitude of a stylus-equipped tablet. Starting at $499, the Yoga Book comes in Android and Windows versions, allowing you to choose your experience with it. However, no matter which operating system you choose, the design remains the most appealing thing about the device. While the display-bearing tablet slab is familiar, the connected keyboard with no keys is unique. The Yoga Book also comes with Lenovo's Real Pen and a magnetic pad of paper, allowing you to draw both on the keyboard itself and on paper to digitize notes and artwork. But like so many convertibles, the Yoga Book tries so hard to be all things to all people that it doesn't truly excel in any one area.
Look and feel
The Yoga Book is the most tablet-like two-in-one I've ever held. Its 10.1-inch size, 1.5-pound weight, and 9.6mm thickness when closed makes it an incredibly light and portable device. Adding to that svelte profile is the matte magnesium alloy shell and Lenovo-signature watchband hinge. It is a convertible, however when I first unboxed the Yoga Book, its appearance struck me so much that it was hard to place it in the convertible category in my head. It's more like a tablet that, instead of having a detachable keyboard or a folio case, has a slim slab attached to it.
from Lenovo Yoga Book review: A keyless keyboard that will get you talking, not typing