With all the comfort options turned off, it's not something to play for more than a couple of hours at a time. (thesixthaxis.com)
Looking at your data from the last three months is not a super fun task, but in reality it's a task that probably wouldn't take more than a couple of hours. (bostonmamas.com)
Many babies with colic never seem to stop crying, and most have trouble sleeping for more than a couple of hours at a time. (mymilkybaby.com)