The product is a Kicker 4 Pin Remote Bass Knob, designed to allow for easy control of your car audio system's bass level. Made by the brand Kicker, known for producing high-quality audio components, this remote bass knob is a convenient accessory for enhancing your in-car audio experience. Although the cable is missing, this product can still be used with a compatible car audio system to adjust the bass settings from a convenient location within the vehicle.