I purchased my headphones with my Equinox 800. They fit great and work very well. Good sound and ability to have good volume control from the headset or from the detector. I have found that it is a faster to pair each time to turn your headphones on first and then the detector a few seconds later. My minor issue with the headphones is that the charging lights and blue tooth lights on the headseat are very small and hard to see status in bright light.
As always my order got to me super fast and i'm already out using the headphones, they are top quality and working great ! Love the equinox 800 im using , might be the best machine ever, defiantly one of the best !