У вашего броузера проблема в совместимости с HTML5
5 Minute Countdown Timer with 5 SEC PREPARATION created by @DragonsWarriors.WakeUp team.
Beeps every minute and at the end (00:00).
The line below graphically presents the course of 1 minute. On the right side of the line you can see how many minutes have already passed.
Feel free to use this timer for your personal or group workouts, presentations, live-stream and whatever you want :) But don’t forget to give us a credit and mention DragonsWarriors.com
Dragons Warriors use this timer for:
5 min plank challenge/workout
Share with us (in the comments below) what are you using this timer for!
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https://www.dragonswarriors.com/
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