How to distinguish the authenticity of Sennheiser mx375

Sennheiser's headphones are good. But there are many fakes. But it can be identified by anti-counterfeiting labels:

The telephone number is printed on the label 1. Call 4008 155888 or 016440315 to check the authenticity;

Second, the label is printed with SMS inquiry number: edit FM*+ security code and send it to 106633 156 to inquire whether it is true or not.