What is a Break.Down.Timer:
This is a handy timer where you can define notifications while the timer is running. Imagine this scenario: You have 45 minutes time to go for a walk, so you should go back after the half of the time. So, set the timer duration to 45 minutes, define a break after the half of the time and start the timer. Now you get a notification (audio signal, vibration, device notification) when the half time is reached, AND of course when the whole time is reached.
Other scenarios could be to get notified every quarter of a duration to keep a feeling of the passing and remaining time. Or to get notifications short before the end of the duration.