Towing with technology! Measures tongue weight, pin weight, payload, and gross combined weight in real-time with an OBD-II connector that communicates wireless via Bluetooth with an app on your iPhone or Android device.

 PROP 65 WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov