Tough enough for any busy classroom, the durable Yoga 11e boasts powerful processing and an all-day battery. It can also be used as a tablet, laptop, or anything in between. And built with a post-consumer recycled material, it's a smart, green choice too for students and teachers. Military specification testing validates the ruggedness, durability, and quality of this machine. Before it gets to you, the Yoga 11e has to pass the most rigorous tests and procedures, including high pressure, humidity, vibration, temperature shock, fungus, and dust. It's then ready for everything from the classroom to the great outdoors.