XP Deus double-D search coil X35 22.5cm: 35 frequencies with sub-frequencies in the ranges 3.7 to 4.4kHz, 7.1 to 8.4kHz, 10.5 to 12.4kHz, 15.2 to 17.8kHz, 23.5 to 27.7kHz, transmission power adjustable in all frequency ranges, special feature "BOOST transmission power" in the lower frequency rang...