Garrett | Ace Apex Metal Detector with 6" x 11" Viper CoilGarrett ACE Apex Metal Detector with 6 x 11 Viper Coil *Basic Package: MS 3 Headphones Not Included Choose from powerful single frequencies to enhance detection on specific targets*, or select one of Apexs simultaneous multifrequency modes to achieve excellent detection on all targets in all soils. * Note: lower frequencies generally offer improved detection on larger and more conductive targets (i. e. large silver coins). Higher frequencies generally