Check the listing for details. Garrett Z-Lynk Wireless System Transmitter w/ USB Cable & 1/4 headphone adapter. Condition: New. Listed at 74.90 USD. Garrett Z-Lynk Wireless System. Transmitter Module with USB to 1/4" headphone jack Adapter and USB charging Cable. Use your favorite land headphone with 1/4" plug and go wireless! All the benefits of using headphones, without being tied to your metal detector. Nearly universal; designed to work with most metal detector brands and most wired headphones. Note: Z-Lynk Wireless System requires use of headphones with a 1/4" headphone jack (not included). Keep all of your metal detectors wireless-ready by picking up additional Z-Lynk transmitters. *Please Note : WT-1 Transmitter requires a Z-Lynk Headphone Cable with 2-Pin AT Connector Cable for AT Gold, AT Pro, ATX or Sea Hunter Mark II to operate wirelessly with 1/4" jack headphones. 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 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. Can be used on both VLF (single frequency) and pulse (multi-frequency) detectors. Additional Info: Recharge the Z-Lynk transmitter and receiver modules with the supplied cables by attaching them to a laptop, your vehicle’s USB port, or a phone charger’s USB power block. Each module has an Auto-Off function that will switch off power after 30 minutes of inactivity. Specifications Speed:17 millisecond delay (6 times faster than Bluetooth)Bandwidth: 20KHz (High Fidelity) 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)