This car diffuser measures 8x3.5 centimeters and is made of high quality ABS and alloy material. The small and delicate design can be easily placed in any car interior without taking up too much space, while the saucer-shaped appearance will not obstruct the driver's view. The essential oils are extracted from natural plant ingredients, alcohol-free and additive-free, equipped with natural birch spindles and scent-locking technology to emit natural fragrance. In addition to providing a pleasant fragrance, it also helps purify the air inside the car and reduce harmful gases in the air. Not only limited to use in the car, it can also be used in bathrooms, bedrooms, pet houses and many other occasions. The smart start function enables it to work with the vehicle's stop-start automatic switch, which automatically turns on when entering the vehicle and turns off when leaving the vehicle. Meanwhile, the multi-speed automatic adjustment function allows you to easily adjust the spray intensity and light mode, convenient and hassle-free to use.