The JQR003 Smart Car Air Vent Diffuser features advanced intelligent control system for perfect auto start/stop operation Automatically activates when you start your vehicle, releasing your chosen fragrance Automatically shuts down when engine stops to prevent battery drain and ensure driving safety Innovative dynamic emoji design adds fun to every drive Multiple LED expressions randomly change, bringing fashionable elements to your car interior Utilizes efficient atomization spray technology with micron-level fragrance particles Quickly neutralizes car odors and effectively removes smoke and food smells Maintains fresh, natural air quality inside your vehicle Five premium fragrance options: Pure Cologne for gentlemanly charm Classic Ocean for refreshing sensation, Fresh Osmanthus for cozy atmosphere Hilton Fragrance for sophisticated taste, Gardenia for natural floral scent Convenient USB charging with built-in high-capacity lithium battery Weeks of usage per charge, perfect for daily commutes and long trips Compatible with various car vent models, easy installation Ideal choice for enhancing driving experience and improving in-car environment