The most popular XP coil in the X35 series: XP Deus Double-D search coil X35 285cm: 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 range. NORMAL or BOOST selectable. When "BOOST" is switched on, the transmitting power of the search coil increases and thus offers greater search depth. The battery capacity of the coil increases in most frequencies between 10 - 40%. The high operating frequencies 23 - 27.7 kHz offer excellent search results on small targets and on tagets with low conductance values. Improved locating stability on all types of ground, with coil guard, coil screw set and lower boom section.