Wired headphones, foldable, compact, and lightweight, compatible with all our machines including the DEUS and ORX. Advantage: The FX03 headphones are popular with prospectors who want an even lighter set up. These budget headphones are foldable, compact and include an in-line volume control. The specific speaker impedance makes the FX03 headset the perfect inexpensive headphone choice to compliment your XP Detector. Foldable, single sided lead with in-line volume control, impedance: 30 ohms and 3.5 mm jack.