The Pro Edition Features two metal detector operation search modes the first mode allows the user to search for different types of metals with an auto ground balance and high sensitivity. The second mode allows the user to search by discriminating what kind of metal is being detected. The ability to weed out metals that are not of value to the user insures that time is not wasted on digging up junk metals and that the user focuses on precious metals that are worth more. Results are displayed on the view meter and pointer. Adjustment knobs for sensitivity and discrimination. 6.5 Waterproof search coil allowing you to search in shallow water. Features an adjustable stem from 15.5-25 and an adjustable arm rest. Operates on two 9V alkaline batteries not included.