How this timer works
Set the duration, then start. Pause holds the remaining time. Reset returns to the values in the fields. When the countdown hits zero, the tab title changes and the timer beeps if your browser allows sound after you press Start.
FAQ
Does the timer keep running if I switch tabs?
Yes. It uses the real clock, so remaining time stays correct even if the tab is in the background.
Will I hear a sound when time is up?
A short beep plays if the browser allows audio. Keep the tab open so you do not miss it.