Take your favorite scents on the road with you with our latest in smart technology. The Smart Car Diffuser™ enhances any journey with it's sleek and modern look, providing both visual and aromatic pleasure. Featuring smart auto start and stop function, the diffuser is able to detect when your car is on/off meaning it will disperse scent while the car is on, and enter a 'stand by' state not dispersing scent while the car is off. Includes a USB charger to easily charge device. Easily swap scents at any time with scent cartridges. 5 levels to adjust scent intensity to your liking.