Minelab ML 85 Wireless Headphones (X-Terra Pro, Equinox 700 / 900, Manticore)Minelab ML 85 headphones use wireless technology to deliver fast, higher quality audio than standard Bluetooth. This results in more precise and faster detection responses. They are compatible for use with MANTICORE, EQUINOX 900, EQUINOX 700 and X TERRA PRO detectors. With more than 32 hours of operating time, you'll have a hard time running out of power while in the field. Recharge time of about 3 hours. Headphones contain: ML 85 Wireless Headphones