Lenovo carbon x1 is of the thinnest commercial high end laptop 8 gb ram and 180 gb rom with i7 processor it weights around 1.4 kg performance of the laptop is out standing battery life is up to 15 hours with 720 hd camera the size of the laptop is 15.7 inch* 8.5 inch* .6 so far I had very good experience many times it fell down from my bed nothing happened though it is expensive value for money. It is very comfortable to use. if talk about service I never needed im using from past 2.5 years its in good conditiion