XP BH-01 Bone Conduction Headphones for Deus II Metal DetectorXP BH 01 Cone Conduction Headphones for Deus II Metal Detector XP is proud to present the first bone conduction headphones designed for metal detecting, BH 01. Made in France by XP, it is waterproof IP68 so you can dive with your DEUS II up to 20m deep. Using ordinary waterproof headphones underwater, the ear fills with water, and hearing is often lessened. BH 01 sits in front of the ears on the cheekbone and transmits sound to the inner ear directly