This is a tailored regatta countdown application made for Apple Watches.
To start, click on the Start button. The digital clock will show the remaining time to the nearest tenth of a second.
To synchronize to the nearest whole minutes, simply click on the Sync button.
When the countdown is finished, click on the Restart button to redo the countdown.
On each tapping of a button, whole minutes, final countdowns, there will be unique signatures of haptic feedbacks so that you know the time without looking at the watch face.