Buying YouTube watch hours is a great way to increase the reach of your videos. To do this, first launch a video and click on the "Skills" tab at the top of the screen. Under "Channel Settings," select "Watch Time." Next, click on "Add Watch Hour" to purchase hours, and enter your desired number in the field provided. Once you buy 4000 watch hours on youtube, click on "Show Skills Details" to view them in fullscreen mode!