My laptop has a 14″ screen but Pro Tools works best on one big screen or using two screens. In my studio I used to have one main 23″ monitor and a second 15″ monitor. Last week I started using my iPad as a second screen, propping it up next to my laptop. It connects via a short USB-C cable, which also powers the iPad. I am really pleased with how well it works. Extremely portable, too. I would hesitate to carry a second screen with me, but I almost always travel with the iPad.