This laptop has a 17.3" screen, which, as will all screens, is the distance from one corner to another.
The standard laptop comes with an HD resolution screen - 1920x1080. However, this can be changed for a 4K screen - 3840x2160. In addition to the 4K resolution the screen has a wide colour gamut which means that the colours are more vibrant than on a normal screen. As it is an IPS screen it can also been seen properly form a wide range of different angles.
Have the screen calibrated
The extra colour range is great but may be a problem if you are trying to grade video on the computer. However, you could have this screen calibrated by us, using a piece of equipment called a "Spyder Elite" which we have at the office, and then you would have the option of switching the screen between different calibrated settings including REC709 and REC2020. The more brilliant colours of this screen also mean that some intensive colours, particularly bright reds and greens "pop" more than you are used to on a normal screen. If you have the screen calibrated then you can choose a setting with less intense colours if you prefer.
We would always recommend that grade by viewing the picture through a proper i/o device, such as those made by Blackmagic, and using a properly calibrated video monitor. If have the laptop screen calibrated it is a reasonable alternative, and definitely better than using just the computer screen but not calibrated, however, a computer screen is never quite as good as a proper video monitor and, for example,will not display interlace picture as well as a video monitor. It is also possible that future graphics card driver updates may slightly alter the way the screen works which means the calibration done when you bought the laptop would not be as accurate as it was when originally done. You can re-do the calibration but you need to own a "Spyder Elite" to do so.
Will the calibration work on another screen I plug into the laptop?
No. Each screen has to be calibrated individually using the hardware we have, as each screen is different. We can only calibrate screens which are connected to the laptop and running Windows.
Make sure your chosen editing program works properly at 4K
New programs have probably been re-written to support 4K, or "HiDPI", screens. Older programs will not and therefore the icons and text will be too small to read properly. Current Adobe Premiere Pro CC2015 and all the current Adobe applications and DaVinci Resolve will scale properly on a 4K screen, Grass Valley EDIUS 8 has been adaptor to HiDPI screens but this work is not quite finished yet (an update is expected in December to make it work a lot better on a 4K screen), and Avid Media Composer 8 does not scale very well. You can always drop the screen resolution to HD (thereby making it pointless to buy a 4k screen!) or use a work-around using a "manifest" file. The latter is a way of scaling a program so that it looks ok, but looks no better than it would have looked on your HD screen.
If you program has been adapted to work properly on a 4K computer screen it will look sharper and nicer.