A lunch-break timer counts down your break so you can step away from the desk and still get back on time. This preset loads a one-hour break with a single beep when it is up — set it when you leave, and you have a clear end to the break without watching the clock through your meal.
A full hour is the default, but breaks vary: open the preset in the editor and drop it to thirty or forty-five minutes for a shorter break, or set the rounds if you want it to mark more than one. The countdown fills the screen on the fullscreen view, so the time left is easy to glance at from across the room.