Metal enclosure with solar technology Car Fragrance Diffuser made of zinc alloy with solar fan blade robust and easy to install.Package includes: 1*solar aromatherapy diffuser for car ,1*aromatherapy ring. Improve Air Quality: Also as an aromatherapy,our air fresheners come wtih a Cologne aroma ring that improves air quality and keeps the air fresh,feel like in nature. Giving you a good mood everyday. Long-lasting Fragrance: The fragrance of the scent ring is even and lasting, bringing you a comfortable driving experience.Usually the aroma can about 1 monthsoptimal use time is 1 months.After one month, the smell will gradually weaken.Put it into the solar air diffuser correctly, the aroma will automatically come out. Available to pregnant women and babies. Innovative Patented Design:The interesting solar fan blades rotate automatically under the sunshine to accelerate the diffusion of the aroma. It is suitable for a variety of occasions. No matter it use inside the car,under the windshield window or at home. It will much interesting If there are multiple diffuser blades rotating together under the sunshine.Own design patent.