Writing text document and tired of reaching our mouse every time the timer fires? You can fully control this time with the keyboard without touching the mouse.
Stop iTunes playback
If you like to work while listening to music, like I do, you can set up the timer to auto pause this music when the time is elapsed. It is the less intrusive way to remind you that the period is elapsed.
Extend the time periods easily
Timer already fired, but you still want to continue your work? You can always extend the interval!