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Sinn is the real deal. I had a U1 fully tegimeted for several years before selling it upon the U50 release. It was nearly a daily wearer, was running at approximately +1 second a day and looked as good as the day it arrive. The Tegimeted process isnt just marketing jargon, it really works.
My U50 was running about +5 seconds on the day of arrival, but I haven't checked the accuracy since the 'break in' period. Sinn is an amazing bang for your buck. I also have an 104 and EZM 3f, and I'm truly impressed with the quality of their product.
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