Girard Perregaux

I recently purchased the above watch with small seconds and power reserve new. I wore the watch for a couple of weeks and it kept fairly good time losing about 4 seconds per day consistently. I put the watch away for about a month and now even when fully ... 

G'day, if it´s new (that is, bought from an authorized dealer within the warranty period), i´d personally try to work it out with the AD who sold it. Usually models bearing movement based on a GP3XXX caliber, which includes reference 25850, are known to b...