At a mere 700 grams, the Z550 (priced at US$1,299 onwards) is touted as the world's lightest 13.3 inch laptop. It has a sturdy magnesium lithium chassis, the latest 5th gen Intel Core i5 processor, 4GB RAM, 128GB SSD and a battery life of up to 8 hours. In addition to the ultra lightweight design, the laptop has a hinge that lets the screen open up a 180 degrees.