BAG AND SIFTER ALLOW FOR GREAT EASE-OF-USE; FEATURES THREE DISTINCTIVE ALERTS FOR DIFFERENT TYPE OF METAL; FERROUS/NON-FERROUS DISCRIMINATOR DISTINGUISHES IRON/STEEL FROM SILVER/GOLD; 1 TOUCH AUTO-TUNE & VERY LOW FREQUENCY DESIGN FOR ACCURATE DETECTION; GROUND CONTROL TUNES OUT FALSE SIGNALS IN AREAS WITH PROFUSE MINERALS ; VIEW METER & POINTER WITH FERROUS AND NON-FERROUS INDICATOR LIGHTS; FRONT MOUNTED 1/8" HEADPHONE JACK; REQUIRES TWO 9-VOLT BATTERIES; 5 YEAR WARRANTY