Just a quick informative video letting you know there are still fake GPX 5000s getting around always check with minelab before purchasing a detector. here's a link to minelab site where you can go to find out if your machine is genuine https://www.minelab.com/support/stop...
At a minimum talk to your local Certified Mienlab dealer and have them look at the unit most dealer will be happy to look over it.