Land-based headphones are included with the MX Sport along with a ¼” adapter for fitting any wired headphones to the detector. Stereo headphones between 8 and 150 ohms are compatible with the MX.
However, to be able to detect underwater with headphones, you must purchase the waterproof Sport headphones to connect to the socket on the control box. The headphone cable and headphone connect cap should be firmly tightened to ensure ultimate waterproofing while it is submerged.