So I got these headphones from my father, I was able to find out they were Blackshark but I don't know when they are from and I can't tell any differences between them. I wanna use them for Bluetooth but whenever I look up how to use the Bluetooth it comes up with either: Hold the power button for an extended period of time which doesn't work or press the "EQ" button on the right earphone that I don't have. My father got them forever ago and never really used them so I don't know if they're Bluetooth, or if they are the 2020 version. (I cannot figure out if the 2020 version supports Bluetooth, I keep getting multiple answers.)