Releases high-density negative ions to neutralize airborne contaminants such as dust,smoke,bacteria, germs from the inside of a vehicle. Our air purifier is very effective in removing gasoline smell. The ionizer get rid of the smell very effectively and leave a clean smell inside your car. The glossy design together with crystal semi-sphere add a contemporary look that accompanies all car interiors No filter replacement or maintenance required. Simply plug this bad boy into your car cigarette lighter and start enjoying pollen-free clean fresh air while driving. Enhance Metabolism. Do not require a battery to operate.