High Performance Filtration System: The built-in turbo fan generates suction to capture the escaping smoke. Easy to Use: An air-purifying ashtray The ashtray is able to naturally inhale the gas produced by the smoke on the ashtray, at an angle of 360. The ashtray is powered by two AA batteries (the product itself comes without batteries). Easy to Use and Clean: This suction ashtray has a removable design and when removed , smooth edges and corners are easily accessible for cleaning. We recommend changing the filter every 2 months. Auto Timeout: The smokeless ashtray works 5 minutes and 20 seconds to shut down automatically. Don't worry about wasting electricity or forgetting to turn it off. It can save energy and prevent burnout caused by long-time operation. Applications Are Wide: The Smokeless Ashtray is suitable for a variety of smoke odor-insulated scenes , such as home, car, office, commercial environment, healthy and beautiful.