How to check if my new Beats Studio3 Wireless Headphones are genuine?

I just bought a new Beats Studio 3 Wireless Headphones. The 3 places where you can see the Serial Number are: 1. Next to the label on the box; 2. By expanding the headband and looking at the slider above the right ear cup; 3. Under the Name on iPhone’s Bluetooth. However, Although the Serial Numbers on the Box and the headband match, the one under Bluetooth is completely different. Is the product fake?

[Re-Titled by Moderator]