We have paired up our headphones with a Bluetooth receiver! Now you can hear that telephone call come through in your headphones without all the fumbling! By pushing a single button on the side of the receiver, you can now finally answer your phone stress-free and take the call easily! While metal detecting, hear the “ghost signals” others are missing when you use the Original Gray Ghost headphones by DetectorPro. These top of the line headphones are the choice of serious jewelry, relic, and coin hunters because they’re made “by detector people, for detector people”.