Panasonic presents the Toughbook 31, the reliable Windows notebook offering the highest performance in its class along with the world's most rugged design. With drop shock protection and a MIL-STD-810G and IP65 certification1, it's the undisputed leader in the fully rugged category. Its 5thgen Intel Core i5 processor packs a punch to deliver desktop-class performance and amazing battery life - 18 hours, or 27 hours with optional media bay 2nd battery. The Toughbook 31 offers a 13.1" brilliant 1200 nit touchscreen available with Panasonic CircuLumin technology, integrated webcam and DVD player. Six generations of delivering rugged performance plus 15 years of consistent docking compatibility, and you have a computer that will go the distance with you anytime, anywhere.