I recently purchased the Ingenieur with the ceramic bezel and display back. I recognize that it does not have the soft iron inner case, but was wondering if it has any antimagnetic properties whatsoever. If so, how is it rated? I don't expect the 80,000 A/m of the other models but want to see how it stacks up to the other models. Should I feel as secure in this watches antimagnetic properties as the other Ingenieurs?