Leonvo ThinkPad 3444F9U 14-Inch LED Ultrabook (Intel Core i7-3667U, 2 GHz) Black Thinnest Thinkpad ever Lenovo RapidCharge charges the ThinkPad X1 battery up to 80% in 30 minutes RollCage and Corning Gorilla glass protects the ThinkPad X1 against accidental drops and scratches RapidCharge battery designed to last 3 times longer than a standard notebook battery. Full-size spill-resistant precision keyboard. Now backlit.