When selecting and entering "in 150 minutes", for example, the bottom left-hand corner text shows what the time will be in 150 minutes, which might be (for example)
Alarm will be set for 1:00:00 AM tomorrow,
Saturday, June 2, 2018.
This is, obviously, very useful.
When selecting and entering "at 1:00 AM June 2, 2018" (for example), the bottom left-hand corner text does not indicate that the time interval will be 150 minutes. At least for me it would be helpful if it included the time interval so I could double check whether the alarm was set correctly.