I've worn my Rolex Submariner "no-date" almost daily since Feb. 1998, and I have never had it serviced. I compare it almost daily to the NISTIME 32 Bit TCP Time Client on my computer, and it is usually well within 5 seconds of the NISTIME server. I paid $2,500.00 for it back in '98, but during my Air Force days back in the late 70's, the same watch was $600.00 in the Eglin AFB exchange. Right now, the new ones are going for about $3,600.00, so there is some long-term investment value in a Rolex, and I have the original box, booklet, anchor, and paperwork, including the Rolex jewelers appraisal, which is a must have. - JoeBerg