The Garrett AT Max metal detector offers maximum detection with powerful, wireless, all terrain performance. Enhanced electronics, a 13.6 kHz operating frequency, and eight Sensitivity/Depth adjustments allow you to detect targets deeper than other Garrett AT detectors. The Garrett exclusive Automated Ground Balance Window feature can simultaneously "spread" the ground balance setting to a range of values to reduce ground response in severely mineralized areas. Automatic and manually adjustable ground balance options also available. Superfast Z-Lynk wireless technology is SIX times faster than Bluetooth. Integrated circuitry transmits audio to your wireless headphones. Auto pairing. No cables, and no interference from other wireless devices. Hunt Day or Night with the backlit display feature that allows you to continue hunting in low light conditions. The Iron Audio feature allows you to hear iron trash before you dig it! Also includes True All Metal Mode, All Metal Iron Mode, Digital Target ID and Adjustable Threshold to better hear targets. Sync your Pro-Pointer AT to your Z-Lynk enabled detector to hear both detector and pinpointer alarms in your headphones, even in noisy environments (beach, high winds, congested urban areas, organized hunts). The Garrett AT Max / Pro-Pointer AT Z-Lynk Special includes: AT Max Metal Detector (PN 1142060) Garrett MS-3 Z-Lynk Wireless Headphones 8.5" x11" DD PROformance Coil 8.5" x11" DD Coil Cover (installed on coil) Special Promotion Bundle Item: Pro-Pointer AT Z-Lynk wireless pinpointer (PN 1142200).