Display Type: HD TruBrite® LED Backlit display
Screen Size: 13.3"
Maximum Resolution: 1366 x 768
Macbook air: 13.3-inch (diagonal) LED-backlit glossy widescreen display with support for millions of colors
1440 by 900 (native), 1280 by 800, 1152 by 720, and 1024 by 640 pixels at 16:10 aspect ratio and 1024 by 768 and 800 by 600 pixels at 4:3 aspect ratio
1440 by 900 (native) so that's the max resolution, 1440x900. this is higher than HD (720p), but below Full HD: 1080p
the macbook air is pretty good in it's display quality. as for resolution it is average/slightly above average. but that's all you need, anything better and your computer will be slower. to make them so thin ultrabooks don't have real discrete graphics cards, so doing certain tasks can seem slow if you have a really high resolution monitor