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 Omega Double Eagle Perpetual Calendar Mid-Size 1511.51 By: Omega Average Rating: 5.0 Total Reviews: 1 More Information unbelievably accurate  On: 2007-07-27I was looking for a watch that had a sapphire crystal to prevent those annoying scratches, a perpetual calendar so I would not have to re-set the date until batteries went dead...in about 5-years,and super accurate... rated at +- 20 seconds per year and a watch that looked good too! I found it in this watch. An even bigger surprise was that the ETA brand movement is rated as accurate as 10 seconds per year in other watches due to the thermo-compensated crystal mechanism that adjusts for severe temperature changes over the seasons. My experience after owning it a little less than 1-year is the watch deviated about 3 seconds and this is with me maybe taking the watch off once or twice during all this time. This rivals any watch at any price. Highly recommended. |