I think my Planet Ocean is somewhat unhappy. It's been faultless up until the last few days, where I noticed the power reserve has greatly reduced. I took the watch off at around 6pm on Friday evening, only to find it had stopped the following afternoon. I've also fully wound the watch (40-50 turns) and again, it stopped the following day. I'm guessing the mainspring has potentially become magnetised? Does anyone know a good independent who could de-magnetise the watch? Perhaps also give it a thorough clean to remove all dirt etc? How much should I expect to pay for this ... or is it back to Omega for a full service?