? Squelch-Tech(R) fully automatic ground balance eliminates false signals;? Push button discrimination & 1-touch depth control;? 4-segment digital target identification & 3-tone audio feedback for accurate identification of buried objects;? 8 interchangeable waterproof coil;? Easy-view LCD display is readable at varying distances;? Fully automatic ground balance;? Headphone jack;? Requires two 9V batteries;