all replicas are problem models, at least all chronos to a certain extent and even some gens are problem models - I had an Omega Seamster Pro and had a lot of problems with it, even my genuine Panerai broke down after about 1 month. With replicas it is all about luck - I received models where nobody had problems with but I. My BB for example had the usual slipping chrono hands problem, but was/is ok on all other fronts.