Don't know if this is a silly question, I got my first speedmaster and just had it serviced, I set the time to the secound with my iPhone about 5 days ago, now after this short time it seems to have lost about a minute behind with my iPhone. I wind it every day . I know its an old watch.
Was just wanting to know if this is normal or should I take it back to where I got it serviced .
Thanks in advance
Just would like to know what the experts think

 

60 seconds in 5 days are well within what Omega promises accuracy-wise, so it's no cause for worry. It could probably be regulated a bit.