I would not send it to Omega for service unless it needed a full refurbish and was not working. In that case Omega will put in a whole new movement for a good deal (though not cheap). Find good trusted Omega watchmaker. When changing battery there are videos on the web to direct you as well . Not hard but you need to be careful. There are small parts and a spring that can be lost. Not simple like a cheap quartz watch. BTW the clasp on mine is Titanium as well.
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