The ABN Wireless Magnetic trailer Lights Wireless Towing Light allows you easily connect your towing vehicle for rear lighting. Sonically sealed polycarbonate plastic of this wireless light transmitter provides maximum durability and longevity while blocking water to protect the 2.4Hz wireless connection use during harsh weather. Wireless tail lights have a built-in antenna that offers over 100 feet of operating distance and up to 100-hour battery life as turn/tail lights. Simply plug in the 7 pin transmitter to your 7 way connector and position the magnetic lights for towing on any metal surface. Use the USB cord and wall or cigarette charger to quickly recharge the built-in 3.7V 6000mAh rechargeable lithium batteries. IP65 moisture test approved and SAE, STI, FCC, and DOT compliant. WARNING: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.