I had the opportunity to cold test a demo Z-Lynk Wireless System from Garrett. It's very ergonomic, works much better then any other wireless system I have owned and also works on Pulse Induction detectors.
Video Link https://www.youtube.com/watch?v=i2TfIqrd0s0
Freedom—all the benefits of using headphones, without being tied to your metal detector.
Lightning-fast speed—Near-zero delay (17-milliseconds) from your detector to your headphones. Six times faster than Bluetooth speed, and up to four times faster than other wireless headphone kits.
Versatility—Nearly universal; designed to work with most detector brands and most wired headphones.
Frequency-Hopping Technology—Creates an infinite number of channels to prevent interference with nearby headphones and wireless devices.
Extended Hunting Time—Get up to 30 hours of operation per charge. Recharge the Z-Lynk modules with any micro-USB charging port—on your laptop, in your car, or with a USB power block such as a smartphone charger.
Universal - Can be used on both VLF (single frequency) and pulse (multi-frequency) detectors.