Ritz Power Shift MS-001 --- 2006 Best Car Goods Of The Year Awards in Environment Protection and Fuel Conservation Field. It increases engine power & fuel efficiency while reducing car emissions. Just plug it in a lighter socket of a car. That's the complete installation. The World First Eco-friendly Power-up Product. The tiny does a big job. The 2006 Best Car Goods of the Year in Japan. The patent pending circuit inside really works. The easiest electric Tune-up. Plug it in a cigar socket. "Ritz" illuminates and it's ready to go. Improves engine power, car emission, mileages, A/C, A/T, car audio sound, engine sound&amp;vibration. The users actual opions are available to look at the web site. They feel the difference. Works with any cars?: Yes, gasoline, diesel, hybrid, LPG/ passenger cars, vans(All 12V) More info at: www.ritzpowershift.info