Garrett MS-3 Z-Lynk⢠Wireless HeadphonesComfortable ear cushions and adjustable headband guarantee a comfortable fit for every head size.Features:Built-in Z-Lynk receiver. High-fidelity audio.Volume control. Adjust signal levels to suit individual hearing requirements and to enhance weak signals.Comfortable headband and ear cushions.Folds down for easy storage.Speaker impedance: 8 ohmsFrequency response: 30-18,000 Hz.This wireless headphone system works with many models of metal detectors. You can use these headphones and transmitter if your metal detector has one of the following: 1/4" headphone jack2-pin headphone jack such as that found on the Garrett AT Gold, AT Pro, Infium LS, SeaHunter Mark II, and ATX detectors.Is a Garrett wireless-enabled metal detector such as the Garrett AT Max or Ace Apex