The amplifier controller is convenient and practical, with excellent texture, and can serve you for a long time without being easily damaged. This amplifier controller is a very practical and reliable for your needs. The exquisite craftsmanship can serve you well without breaking easily. Color: As shown Material: PVC Size: 400.00X3.00X3.00cm/157.20X1.18X1.18in Wide Compatibility: Compatible with a vast range of vehicle brands and models, satisfying the needs of a wide range of car owners. Provides reliable and consistent performance for a seamless user experience. Simple to install, allow users to swiftly set up and use the controller without requiring professional assistance. Delivers exceptional sound performance for your car's audio system with its controller. Convenient Remote Volume Control: Effortlessly change the volume of your vehicle's amplifier subwoofer using the remote volume controller. Package includes: 1 x volume control