Double timers in 17 minutes total countdown, In Round Timer start from 7 Minutes, When timer countdown to 1 minute Blue LED is On and timer plus in order for 4 , 3 , 2 and 1 minute. Until last round timer have 2 minutes and goes down to zero. 0:00 - Prepare 0:05 - Start 2:05 - 15 Minutes Left 6:05 - 11 Minutes Left (+4 Minutes on next round) 7:05 - 10 Minutes Left 10:05 - 7 Minutes Left (+3 Minutes on next round) 12:05 - 5 Minutes Left 13:05 - 4 Minutes Left (+2 Minutes on next round) 14:05 - 3 Minutes Left 15:05 - 2 Minutes Left (+1 Minute on final round) 15:25 - 100 Seconds Left 16:05 - 1 Minute Left 16:35 - 30 Seconds Left 16:55 - 10 Seconds Left 17:05 - Finish