The Negative Ion Car Ashtray Air Purifier is a versatile and practical device that serves multiple purposes. It can be used as an ashtray, an aroma diffuser, and even as an air purifier. Featuring a circular vent design on the bottom side, this purifier can exhaust air in 360 degrees. It is equipped with a built-in negative filter cotton that effectively absorbs tar and releases negative particles, ensuring a cleaner and fresher environment. The purifier is made of ABS flame retardant material, making it safe to use and resistant to deformation when in contact with cigarette butts. Its separate design allows for easy cleaning, and its compact size ensures it doesn't take up much space and can be conveniently stored. Powered by 2 AA batteries (not included), the purifier has an automatic shutdown feature that turns off the device after 5 or 20 minutes, preventing unnecessary power consumption and ensuring peace of mind. Key Features: Multi-functional device that serves as an ashtray, aroma diffuser, and air purifier Circular vent design for 360-degree air exhaust Built-in negative filter cotton for effective tar absorption and release of negative particles Made of ABS flame retardant material for safety and durability Separate design for easy cleaning Compact size that doesn't take up much space Powered by 2 AA batteries with automatic shutdown feature Includes ashtray purifier, manual, and aroma tablet