OMEGA 215.92.46.22.99.002 Dark Grey Seamaster Planet Ocean 600M 45.5 mm, grey ceramicProduct Overview In 2005, Omega introduced the "Planet Ocean" collection, keeping in mind its deep connection with the sea. The stylish design, with a water resistance of 600M, rightfully inherits the DNA of Omega's iconic diver's watches. This model, equipped with a GMT function, features a 45. 5mm silicon nitride ceramic case. This material, which is half the weight of zirconia ceramic used in the inner ring, is complemented by a sandblasted grade 5