Rechargeable and cordless design This smart car air freshener is completely wireless with a rechargeable battery, offering hassle portability for freshness wherever you go. fragrance options With its 3level adjustable diffuser, you can easily the fragrance intensity to create a pleasant driving atmosphere tailored to your liking. Enchanting starlight effect Enhance your car ambiance with a captivating starry light projection that not only looks beautiful but also sets a calming mood during travels. Smart automatic functionality Featuring intelligent auto on/off capabilities, this aroma diffuser activates when you start your engine, ensuring you're greeted by delightful scents instantly. Use scenarios Daily commuting and short trips: Start your engine and enjoy a pleasant fragrance from the moment you begin your drive. Adjust the diffuser to your preferred level for a balanced scent that does not overwhelm the cabin. Long road trips: Maintain a fresh interior over extended drives. Set a comfortable fragrance level and let the starlight effect create a relaxing atmosphere for you and your passengers. Ridehailing or shared vehicles: Ensure a consistent, inviting scent in busy vehicles. The auto on/off feature activates automatically with engine start, so you don't have to remember to turn it on.