Starts with a 5 sec pre-count, then plays a five beep countdown before each round starts and a beep when it ends, plus an alarm after 91 rounds with 60 sec overtime.

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Workout routines:

10 Minuten Sixpack Workout | EXTREM - Schaffst
Video by: Sascha Huber
Link:    • 10 Minuten Sixpack Workout | EXTREM -...  

12 Minuten Kurzhantel Workout für Zuhause! (Full Body)
Video by: Sascha Huber
Link:    • 12 Minuten Kurzhantel Workout für Zuh...  

10 MINUTEN SIXPACK WORKOUT für Zuhause | Für einen flachen und definierten Bauch!
Video by: Paulina Wallner
Link:    • 10 MINUTEN SIXPACK WORKOUT für Zuhaus...  

High Intensity Fat Loss Jump Rope Workout
Video by: Jump Rope Dudes
Link:    • High Intensity Fat Loss Jump Rope Wor...  

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For a specific number of rounds other than 91 here's timestamps for every fifth:
∙ 5 rounds / 3 min 10 sec (57:21)
∙ 10 rounds / 6 min 30 sec (54:01)
∙ 15 rounds / 9 min 50 sec (50:41)
∙ 20 rounds / 13 min 10 sec (47:21)
∙ 25 rounds / 16 min 30 sec (44:01)
∙ 30 rounds / 19 min 50 sec (40:41)
∙ 35 rounds / 23 min 10 sec (37:21)
∙ 40 rounds / 26 min 30 sec (34:01)
∙ 45 rounds / 29 min 50 sec (30:41)
∙ 50 rounds / 33 min 10 sec (27:21)
∙ 55 rounds / 36 min 30 sec (24:01)
∙ 60 rounds / 39 min 50 sec (20:41)
∙ 65 rounds / 43 min 10 sec (17:21)
∙ 70 rounds / 46 min 30 sec (14:01)
∙ 75 rounds / 49 min 50 sec (10:41)
∙ 80 rounds / 53 min 10 sec (07:21)
∙ 85 rounds / 56 min 30 sec (04:01)
∙ 90 rounds / 59 min 50 sec (00:41)

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:    • Interval timer - 30 sec rounds / 10 s...  
(for example a link to this interval with 45 rounds (29 min 50 sec length) looks like this:    • Interval timer - 30 sec rounds / 10 s...  )

To make it longer than 60 min 30 sec and repeat endlessly instead use the following link: http://loopvideos.com/pYmJNVLzYt4?fro...

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