[PATEK PHILIPPE Watches] new product launch 2018 latest private exclusive customization Patek Philippe's hollow tourbillon has a smooth hollow design concept that is particularly outstanding and a brand-new high-end pet watch. It is equipped with a new hollow self-winding mechanical carving, transparent bottom, made of 316L steel, diameter 42mm, saving power 48 hours, sapphire glass, high-quality Italian calfskin, original folding buckle
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