BreitlingBen wrote:
Hello people I'm a bit concerned to say the least, my new chronomat is onlytwo weeks old I have onoy worn it on weekends as i do a manual job I set it to the talking clock in the uk a day later it had lost a minute and a half nearly which is way of the 3-6 seconds the cosc cert says PLEASE HELP
Well assuming that you were winding it daily (i.e. that it wasn't almost fully unwound) then it needs to go back to the AD.
It's possible that it has become magnetized, but the AD can check.