The CURT 51180 Echo Mobile Electric Trailer Brake Controller with Bluetooth-Enabled is a high-quality trailer brake controller designed for use with 1-4 axles. It is easy to install with its clamp-on mounting style and is suitable for 12V vehicle electrical systems. This model features Bluetooth connectivity for added convenience and is made of durable plastic and PVC materials. Manufactured in the United States by CURT, a trusted brand in the industry, this trailer brake controller is a reliable and efficient solution for controlling your trailer's braking system. OPEN BOX BUT BRAND NEW NEVER USED