I was given a gymboss max for Christmas in 2012. Beccause of all the great reviews I asked for one. So 1 1/2 years later the thing does not work anymore. I can set up the intervals and it tells me set up complete but when I hit start, it goes back to the menu and...Read more
Grand Terrace, California
Do you have something to say about Gymboss Interval timers? What happened? What can we help you with?