Metal enclosure with solar technologyCar Fragrance Diffuser made of zinc alloy with solar fan blade robust and easy to install.Package includes: 1*solar aromatherapy diffuser for car . Improve Air Quality:our car decorations come wtih a Cologne aroma ring that improves air quality and bringing fragrance.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 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.