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Omega Constellation 123.10.27.20.57.001 Mechanical Lady Watch, steel plated 18k bracelet case, equipped with a customized version of the 8520 fully automatic mechanical movement, size: 27 x 13 mm, with many innovative design elements. The dazzling dials are decorated with sun-ray polished patterns, super-nova supernova patterns, and some pearl-bay-toned styles are feather-smooth line textures, available in silver, champagne, white, black and brown styles, and gold, white and blue pearl-beacon styles. This watch is waterproof to a depth of 10 atmospheres (100 m / 330 ft).