Starts with a 5 sec pre-count, then plays a beep when a round starts and a beep when it ends, plus an alarm after 120 rounds with 60 sec overtime.

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Workout routines:

35 Minute Kettlebell Tabata HIIT Workout
Video by: BodyFit By Amy
Link:    • 35 Minute Kettlebell Tabata HIIT Work...  

HIIT Cardio and Abs Workout
Video by: Bodybuilding.com
Link:    • Fat Burning HIIT Cardio and Abs Worko...  

Tabata Challenge - 25 minute workout
Video by: Body Project
Link:    • Tabata Challenge - 25 minute workout.  

A 30-Minute Tabata Session to Burn Some Serious Calories
Video by: POPSUGAR Fitness
Link:    • A 30-Minute Tabata Session to Burn So...  

Belly Fat Burner HIIT Workout with No Equipment
Video by: FitnessBlender
Link:    • Belly Fat Burner HIIT - High Intensit...  

Ultimate HIIT Workout for People Who Get Bored Easily
Video by: FitnessBlender
Link:    • Ultimate HIIT Workout for People Who ...  

4-Minute Fat Burning Workout | Tabata for Beginners
Video by: The Fitologists
Link:    • 4-Minute Fat Burning Workout | Tabata...  

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For a specific number of rounds other than 120 here's timestamps for every fifth:
∙ 5 rounds / 2 min 20 sec (57:31)
∙ 10 rounds / 4 min 50 sec (55:01)
∙ 15 rounds / 7 min 20 sec (52:31)
∙ 20 rounds / 9 min 50 sec (50:01)
∙ 25 rounds / 12 min 20 sec (47:31)
∙ 30 rounds / 14 min 50 sec (45:01)
∙ 35 rounds / 17 min 20 sec (42:31)
∙ 40 rounds / 19 min 50 sec (40:01)
∙ 45 rounds / 22 min 20 sec (37:31)
∙ 50 rounds / 24 min 50 sec (35:01)
∙ 55 rounds / 27 min 20 sec (32:31)
∙ 60 rounds / 29 min 50 sec (30:01)
∙ 65 rounds / 32 min 20 sec (27:31)
∙ 70 rounds / 34 min 50 sec (25:01)
∙ 75 rounds / 37 min 20 sec (22:31)
∙ 80 rounds / 39 min 50 sec (20:01)
∙ 85 rounds / 42 min 20 sec (17:31)
∙ 90 rounds / 44 min 50 sec (15:01)
∙ 95 rounds / 47 min 20 sec (12:31)
∙ 100 rounds / 49 min 50 sec (10:01)
∙ 105 rounds / 52 min 20 sec (07:31)
∙ 110 rounds / 54 min 50 sec (05:01)
∙ 115 rounds / 57 min 20 sec (02:31)

To create a link directly to the number of rounds you wish to use just write the connected timestamp in the end of this url:    • Video  
(for example a link to this interval with 30 rounds (29 min 45 sec length) looks like this:    • Video  )

To make it longer than 59 min 50 sec and repeat endlessly instead use the following link: http://loopvideos.com/0gGTYB75N04?fro...

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