Secretly popular among car and audio enthusiasts, this is the ORBITRON "Smart Earth." Simply attaching it to the negative terminal of your car battery reduces static noise, elevating the soundstage and atmosphere inside your car to the next level. Many users experience improved engine response and more stable operation of electronic devices, making it a tuning item that subtly enhances the overall quality of your vehicle. This is a limited-edition item released to regular customers before the current model (sold as A2 on Amazon) was released. It is said to have a slightly smaller capacity than the current model. If you're interested in your car's grounding, aluminum tape tuning, fuel efficiency, shocks, static electricity, friction, response, suspension, horsepower, torque, engine, audio, sound quality, harshness, or roll, please consider it. This product is from a manufacturer that OEMs products for Maniacs, a company that tunes Audis, Volkswagens, Benzes, and Porsches, among others.