Using it for a talk
Enter the length of your slot and when you want the two warnings, for example 5 minutes and 1 minute before the end. Press Start as you begin. The large number is the time left; the line under it shows the time used so far.
At the first warning the ring turns amber and the label says how many minutes are left; at the last warning it turns coral and says to wrap up. At zero the clock does not stop: it shows “Over time” and counts up, so a chair or moderator can see exactly how far over the talk is.
Plus and minus add or take away a minute while it runs, for a late start or a question that ate into the slot. The chime is off by default; tick it to hear a sound at each warning and at zero.
Full screen puts the clock alone on this screen. Open the clock in a second window to drag it onto a projector, a confidence monitor or a second laptop screen; it follows this page's Start, Pause and Reset. Nothing is sent anywhere: both windows run on this device.
For example: a 20-minute talk with warnings at 5 and 1 minutes. At 15:00 elapsed the clock turns amber and says “5 minutes left”; at 19:00 it turns coral and says “Wrap up: 1 minute left”; 45 seconds after the end it reads “+0:45” under “Over time”.