1080P: 1920x1080 resolution, this is the most common resolution for Desktops and Laptop screens. Useful for cost effective multi monitor setups. 

1440P: 2560x1440 resolution, a nice step up from 1080P allowing you to see more data on the screen. This is especially useful for looking at spreadsheets all day.

4K: 3820x2160: offering 4 times the display area of 1080P this is the office workers dream, allowing for effective multi-app/split screen use with less scrolling to see the data you need. 

Monitor Arm purchases include on site installation!