NEW Garrett Z-Lynk wireless system with 1/4 inch jack plug.

Garrett Z-Lynk wireless Transmitter and receiver with 1/4" headphone jack connector includes: 

WT-1 wireless transmitter
WR-1 wireless receiver
Two USB charging cables
1/4" headphone jack cable
Mounting band
Carrying case

Garrett Z-Lynk key features:

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 inifinite 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.
Can be used on both VLF (single frequency) and pulse (multi-frequency) detectors.

Garrett Z-Lynk specifications:

Speed:      17 millisecond delay (6 times faster than Bluetooth)
Operating Frequency:      2.4 GHz band frequency hopping
Environmental:      Water resistant; do not submerge.
WR-1 (receiver): IP 52: protects against light rain.

WT-1 (transmitter): IP 64: protects against heavy rain.
Battery type:      Rechargeable Lithium Ion
Charging:      Micro-USB charging port (cables included)
Operating time:      30 hours per charge (approx.)
Warranty:      2 years, limited parts and labor
Certifications:      FCC, CE, IC
Operating Temperature:      -20° (-4° F) to 60° C (140° F)