I am at my second device in 2 days, the HR monitor is just a joke. It shows random reading without being touched making it useless. This a selling point that will not work. I am sure that the bike was put together right as all the other features work on it. Looking forward for a reply or it will go back were it came from. I would appreciate a fast solution in that reply. The one i got here costed me another 2 hours, putting the second device together, caring it up and down.....