Privateday7
·I've been to both Europe and Asia with 5-6 watches, they don't even give them a second glance. That said keep them in your carry-on and within reach.
Be careful in Jakarta or Bali customs. They might get suspicious on more than 2 watches you carry, and hand carry bags are the one that they will inspect. It is better to register in your country's customs identifying you will bring your watches back so you have paper ready to explain it.