PORTABLE & EASY TRANSFER: The trailer brake controller offers a non-invasive installation and seamless transferability between vehicles. It connects effortlessly to any 7-way connector and pairs with your smartphone via Bluetooth for mobile control. SMARTPHONE INTEGRATION: Transform your smartphone into a brake controller interface with the brake controller. It syncs wirelessly with both and Android devices using the Smart Control app. Safety is maintained even if the Bluetooth connection drops, as it continues to operate on the last saved settings. SIMPLE SETUP: Experience a hassle-free installation with the trailer brake controller. Just plug it into a 7-way trailer wiring connector-no tools, wires, or hardware needed. A locking tab and included strap a secure connection. ADVANCED RESPONSIVENESS: Featuring a triple-axis accelerometer, the brake controller delivers smooth and responsive . It remains effective even when your smartphone is locked, during calls, or if Bluetooth connectivity is interrupted. BROAD COMPATIBILITY: Ideal for nearly any trailer with 1 to 2 axles (2 to 4 brakes), this electronic brake controller is compatible with cruise control and anti-lock brakes. It does not interfere with for CarPlay or Android Auto, ensuring a wide range of vehicle compatibility. Please note:the physical slightly color difference or difference, does not affect the use, please do not mind, thank you Colour:Black Material:Plastic Package Contents: 1 * Mobile Electric Trailer Brake Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.